lkml.org 
[lkml]   [2022]   [Mar]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: linux 5.17.1 disregarding ACK values resulting in stalled TCP connections
On Tue, Mar 29, 2022 at 9:03 PM Jaco <jaco@uls.co.za> wrote:
>
> Dear All,
>
> I'm seeing very strange TCP behaviour. Disabled TCP Segmentation Offload to
> try and pinpoint this more closely.
>
> It seems the kernel is ignoring ACKs coming from the remote side in some cases.
> In this case, on one of four hosts, and seemingly between this one host and
> Google ... (We've have two emails to google stuck on another host due to same
> issue, but several hundred others passed out today on that same host). I also
> killed selective ACKs as a test as these are known to sometimes cause issues
> for firewalls and "tcp accelerators" (or used to at the very least).
>
> SMTP connection between ourselves and Google ... I'm going to be selective in
> copying from tcpdump (full coversation up to the point where I killed it
> because it plainly got stuck in a loop is attached).
>
> Connection setup:
>
> 00:56:17.055481 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [S], seq 956633779, win 62580, options [mss 8940,nop,nop,TS val 3687705482 ecr 0,nop,wscale 7,tfo cookie f025dd84b6122510,nop,nop], length 0
>
> 00:56:17.217747 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [S.], seq 726465675, ack 956633780, win 65535, options [mss 1440,nop,nop,TS val 3477429218 ecr 3687705482,nop,wscale 8], length 0
>
> 00:56:17.218628 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726465676:726465760, ack 956633780, win 256, options [nop,nop,TS val 3477429220 ecr 3687705482], length 84: SMTP: 220 mx.google.com ESMTP e16-20020a05600c4e5000b0038c77be9b2dsi226281wmq.72 - gsmtp
>
> 00:56:17.218663 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], ack 726465760, win 489, options [nop,nop,TS val 3687705645 ecr 3477429220], length 0
>
> This is pretty normal, we advertise an MSS of 8940 and the return is 1440, thus
> we shouldn't send segments larger than that, and they "can't". I need to
> determine if this is some form of offloading or they really are sending >1500
> byte frames (which I know won't pass our firewalls without fragmentation so
> probably some form of NIC offloading - which if it was active on older 5.8
> kernels did not cause problems):
>
> 00:56:17.709905 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726465979:726468395, ack 956634111, win 261, options [nop,nop,TS val 3477429710 ecr 3687705973], length 2416: SMTP
>
> 00:56:17.709906 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726468395:726470811, ack 956634111, win 261, options [nop,nop,TS val 3477429710 ecr 3687705973], length 2416: SMTP
>
> These are the only two frames I can find that supposedly exceeds the MSS values
> (although, they don't exceed our value).
>
> Then everything goes pretty normal for a bit. The last data we receive from
> the remote side before stuff goes wrong:
>
> 00:56:18.088725 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726471823:726471919, ack 956634348, win 261, options [nop,nop,TS val 3477430089 ecr 3687706330], length 96: SMTP
>
> We ACK immediately along with the next segment:
>
> 00:56:18.088969 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956634348:956635776, ack 726471919, win 446, options [nop,nop,TS val 3687706515 ecr 3477430089], length 1428: SMTP
>
> Hereafter there is a flurry of data that we transmit, all nicely acknowledged,
> no retransmits that I can pick up (eyeballs).
>
> Before a long sequence of TX data we get this ACK:
>
> 00:56:18.576247 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956700036, win 774, options [nop,nop,TS val 3477430577 ecr 3687706840], length 0
>
> We then continue to RX a sequence of:
>
> 00:56:18.576300 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956745732:956747160, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
>
> up to:
>
> 00:56:18.577031 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956778576:956780004, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
>
> Before we hit our first retransmit:
>
> 00:56:18.960078 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956700036:956701464, ack 726471919, win 446, options [nop,nop,TS val 3687707386 ecr 3477430577], length 1428: SMTP
>
> Since 956700036 is the last ACKed data, this seems correct, not sure what timer
> this is based on though, the ACK for the just prior data came in ~384ms prior
> (could be based on normal time to ACK, I don't know, this is about double the
> usual round-trip-time currently).
>
> And then we receive this ACK (we can see this time the kernel waited for ACK of
> this single segment):
>
> 00:56:19.126678 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956701464, win 785, options [nop,nop,TS val 3477431127 ecr 3687707386], length 0
>
> Then we do something (in my opinion) strange by jumping back to the tail of the previous burst:
>
> 00:56:19.126735 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956780004:956781432, ack 726471919, win 446, options [nop,nop,TS val 3687707553 ecr 3477431127], length 1428: SMTP
>
> 00:56:19.126751 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956781432:956782860, ack 726471919, win 446, options [nop,nop,TS val 3687707553 ecr 3477431127], length 1428: SMTP
>
> We then jump back and retransmit again from the just received ACK:
>
> 00:56:19.510078 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956701464:956702892, ack 726471919, win 446, options [nop,nop,TS val 3687707936 ecr 3477431127], length 1428: SMTP
>
> We then continue from there on as I'd expect (slow restart), this goes pretty
> normal up to:
>
> 00:56:19.997088 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956708604, win 841, options [nop,nop,TS val 3477431998 ecr 3687708261], length 0
>
> 00:56:19.997148 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956708604:956710032, ack 726471919, win 446, options [nop,nop,TS val 3687708423 ecr 3477431998], length 1428: SMTP
>
> 00:56:20.262683 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477432263 ecr 3687708423], length 0
>
> Up to here is fine, now things gets bizarre, we just jump to a different
> sequence number, which has already been ACKed:
>
> 00:56:20.380076 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq *956707176*:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687708806 ecr 3477431998], length 1428: SMTP
>
> 00:56:20.542356 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477432543 ecr 3687708423], length 0
>
> And remote side re-ACKs the 956710032 value, which frankly indicates we need to
> realize that the data we are transmitting has already been received, and we can
> continue on to transmit the segments following up on sequence number 956710032,
> instead we choose to get stuck in this sequence:
>
> 00:56:21.180080 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687709606 ecr 3477431998], length 1428: SMTP
>
> 00:56:21.342347 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477433343 ecr 3687708423], length 0
>
> 00:56:22.780101 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687711206 ecr 3477431998], length 1428: SMTP
>
> 00:56:22.942346 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477434943 ecr 3687708423], length 0
>
> And here the connection dies. It eventually times out, and we retry to the
> next host, resulting in the same problem.
>
> I am aware that Google is having congestion issues in the JHB area in SA
> currently, and there are probably packet delays and losses somewhere along the
> line between us, but this really should not stall as dead as it is here.
>
> Looking at only the incoming ACK values, I can see they are strictly
> increasing, so we've never received an ACK > 956710032, but this is still
> greater than the value we are retransmitting.
>
> The first time we transmitted the frame at sequence number 956707176 was part
> of the longest sequence of TX frames without a returning ACK, part of this
> sequence:
>
> ...
>
> 00:56:18.414299 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956705748:956707176, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
>
> 00:56:18.414302 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
>
> 00:56:18.414316 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956708604:956710032, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
>
> ...
>
> Google here is ACKing not only the frame we are continuously retransmitting,
> but also the frame directly after ... so why would the kernel not move on to
> retransmitting starting from sequence number 956710032 (which is larger than
> the start sequence number of the frame we are retransmitting)?
>
> Kind Regards,
> Jaco

Thanks for the report! I have CC-ed the netdev list, since it is
probably a better forum for this discussion.

Can you please attach (or link to) a tcpdump raw .pcap file (produced
with the -w flag)? There are a number of tools that will make this
easier to visualize and analyze if we can see the raw .pcap file. You
may want to anonymize the trace and/or capture just headers, etc (for
example, the -s flag can control how much of each packet tcpdump
grabs).

Can you please share the exact kernel version of the client machine?

Also, can you please summarize/clarify whether you think the client,
server, or both are misbehaving?

Thanks!
neal
00:56:17.055481 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [S], seq 956633779, win 62580, options [mss 8940,nop,nop,TS val 3687705482 ecr 0,nop,wscale 7,tfo cookie f025dd84b6122510,nop,nop], length 0
00:56:17.217747 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [S.], seq 726465675, ack 956633780, win 65535, options [mss 1440,nop,nop,TS val 3477429218 ecr 3687705482,nop,wscale 8], length 0
00:56:17.218628 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726465676:726465760, ack 956633780, win 256, options [nop,nop,TS val 3477429220 ecr 3687705482], length 84: SMTP: 220 mx.google.com ESMTP e16-20020a05600c4e5000b0038c77be9b2dsi226281wmq.72 - gsmtp
00:56:17.218663 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], ack 726465760, win 489, options [nop,nop,TS val 3687705645 ecr 3477429220], length 0
00:56:17.218754 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956633780:956633803, ack 726465760, win 489, options [nop,nop,TS val 3687705645 ecr 3477429220], length 23: SMTP: EHLO uriel.iewc.co.za
00:56:17.380021 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956633803, win 256, options [nop,nop,TS val 3477429381 ecr 3687705645], length 0
00:56:17.383685 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726465760:726465949, ack 956633803, win 256, options [nop,nop,TS val 3477429384 ecr 3687705645], length 189: SMTP: 250-mx.google.com at your service, [2c0f:f720:0:3:d6ae:52ff:feb8:f27b]
00:56:17.383714 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], ack 726465949, win 488, options [nop,nop,TS val 3687705810 ecr 3477429384], length 0
00:56:17.383934 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956633803:956633813, ack 726465949, win 488, options [nop,nop,TS val 3687705810 ecr 3477429384], length 10: SMTP: STARTTLS
00:56:17.546391 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726465949:726465979, ack 956633813, win 256, options [nop,nop,TS val 3477429547 ecr 3687705810], length 30: SMTP: 220 2.0.0 Ready to start TLS
00:56:17.546430 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], ack 726465979, win 488, options [nop,nop,TS val 3687705973 ecr 3477429547], length 0
00:56:17.547288 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956633813:956634111, ack 726465979, win 488, options [nop,nop,TS val 3687705973 ecr 3477429547], length 298: SMTP
00:56:17.709905 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726465979:726468395, ack 956634111, win 261, options [nop,nop,TS val 3477429710 ecr 3687705973], length 2416: SMTP
00:56:17.709906 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726468395:726470811, ack 956634111, win 261, options [nop,nop,TS val 3477429710 ecr 3687705973], length 2416: SMTP
00:56:17.709906 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726470811:726470898, ack 956634111, win 261, options [nop,nop,TS val 3477429711 ecr 3687705973], length 87: SMTP
00:56:17.709949 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], ack 726468395, win 470, options [nop,nop,TS val 3687706136 ecr 3477429710], length 0
00:56:17.709964 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], ack 726470811, win 452, options [nop,nop,TS val 3687706136 ecr 3477429710], length 0
00:56:17.709978 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], ack 726470898, win 452, options [nop,nop,TS val 3687706136 ecr 3477429711], length 0
00:56:17.712221 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956634111:956634191, ack 726470898, win 452, options [nop,nop,TS val 3687706138 ecr 3477429711], length 80: SMTP
00:56:17.712353 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956634191:956634236, ack 726470898, win 452, options [nop,nop,TS val 3687706138 ecr 3477429711], length 45: SMTP
00:56:17.874774 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956634236, win 261, options [nop,nop,TS val 3477429875 ecr 3687706138], length 0
00:56:17.875264 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726470898:726471633, ack 956634236, win 261, options [nop,nop,TS val 3477429876 ecr 3687706138], length 735: SMTP
00:56:17.904288 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956634236:956634348, ack 726471633, win 447, options [nop,nop,TS val 3687706330 ecr 3477429876], length 112: SMTP
00:56:18.066936 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726471633:726471728, ack 956634348, win 261, options [nop,nop,TS val 3477430067 ecr 3687706330], length 95: SMTP
00:56:18.088465 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726471728:726471823, ack 956634348, win 261, options [nop,nop,TS val 3477430089 ecr 3687706330], length 95: SMTP
00:56:18.088603 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], ack 726471823, win 446, options [nop,nop,TS val 3687706515 ecr 3477430067], length 0
00:56:18.088725 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [P.], seq 726471823:726471919, ack 956634348, win 261, options [nop,nop,TS val 3477430089 ecr 3687706330], length 96: SMTP
00:56:18.088969 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956634348:956635776, ack 726471919, win 446, options [nop,nop,TS val 3687706515 ecr 3477430089], length 1428: SMTP
00:56:18.088973 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956635776:956637204, ack 726471919, win 446, options [nop,nop,TS val 3687706515 ecr 3477430089], length 1428: SMTP
00:56:18.088988 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956637204:956638632, ack 726471919, win 446, options [nop,nop,TS val 3687706515 ecr 3477430089], length 1428: SMTP
00:56:18.088990 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956638632:956640060, ack 726471919, win 446, options [nop,nop,TS val 3687706515 ecr 3477430089], length 1428: SMTP
00:56:18.089099 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956640060:956641488, ack 726471919, win 446, options [nop,nop,TS val 3687706515 ecr 3477430089], length 1428: SMTP
00:56:18.089103 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956641488:956642916, ack 726471919, win 446, options [nop,nop,TS val 3687706515 ecr 3477430089], length 1428: SMTP
00:56:18.089117 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956642916:956644344, ack 726471919, win 446, options [nop,nop,TS val 3687706515 ecr 3477430089], length 1428: SMTP
00:56:18.089119 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956644344:956645772, ack 726471919, win 446, options [nop,nop,TS val 3687706515 ecr 3477430089], length 1428: SMTP
00:56:18.089226 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956645772:956647200, ack 726471919, win 446, options [nop,nop,TS val 3687706515 ecr 3477430089], length 1428: SMTP
00:56:18.089229 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956647200:956648628, ack 726471919, win 446, options [nop,nop,TS val 3687706515 ecr 3477430089], length 1428: SMTP
00:56:18.251223 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956637204, win 283, options [nop,nop,TS val 3477430252 ecr 3687706515], length 0
00:56:18.251223 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956640060, win 305, options [nop,nop,TS val 3477430252 ecr 3687706515], length 0
00:56:18.251224 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956642916, win 328, options [nop,nop,TS val 3477430252 ecr 3687706515], length 0
00:56:18.251224 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956645772, win 350, options [nop,nop,TS val 3477430252 ecr 3687706515], length 0
00:56:18.251295 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956648628:956650056, ack 726471919, win 446, options [nop,nop,TS val 3687706677 ecr 3477430252], length 1428: SMTP
00:56:18.251299 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956650056:956651484, ack 726471919, win 446, options [nop,nop,TS val 3687706677 ecr 3477430252], length 1428: SMTP
00:56:18.251314 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956651484:956652912, ack 726471919, win 446, options [nop,nop,TS val 3687706677 ecr 3477430252], length 1428: SMTP
00:56:18.251317 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956652912:956654340, ack 726471919, win 446, options [nop,nop,TS val 3687706677 ecr 3477430252], length 1428: SMTP
00:56:18.251378 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956648628, win 372, options [nop,nop,TS val 3477430252 ecr 3687706515], length 0
00:56:18.251430 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956654340:956655768, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251435 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956655768:956657196, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251455 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956657196:956658624, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251458 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956658624:956660052, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251563 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956660052:956661480, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251566 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956661480:956662908, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251583 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956662908:956664336, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251585 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956664336:956665764, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251694 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956665764:956667192, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251697 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956667192:956668620, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251713 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956668620:956670048, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251716 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956670048:956671476, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251826 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956671476:956672904, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251829 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956672904:956674332, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251841 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956674332:956675760, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.251844 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956675760:956677188, ack 726471919, win 446, options [nop,nop,TS val 3687706678 ecr 3477430252], length 1428: SMTP
00:56:18.413569 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956651484, win 395, options [nop,nop,TS val 3477430414 ecr 3687706677], length 0
00:56:18.413569 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956654340, win 417, options [nop,nop,TS val 3477430414 ecr 3687706677], length 0
00:56:18.413569 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956657196, win 439, options [nop,nop,TS val 3477430414 ecr 3687706678], length 0
00:56:18.413570 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956660052, win 461, options [nop,nop,TS val 3477430414 ecr 3687706678], length 0
00:56:18.413570 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956662908, win 484, options [nop,nop,TS val 3477430414 ecr 3687706678], length 0
00:56:18.413570 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956665764, win 506, options [nop,nop,TS val 3477430414 ecr 3687706678], length 0
00:56:18.413635 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956677188:956678616, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430414], length 1428: SMTP
00:56:18.413639 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956678616:956680044, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430414], length 1428: SMTP
00:56:18.413655 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956680044:956681472, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430414], length 1428: SMTP
00:56:18.413657 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956681472:956682900, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430414], length 1428: SMTP
00:56:18.413774 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956682900:956684328, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430414], length 1428: SMTP
00:56:18.413780 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956684328:956685756, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430414], length 1428: SMTP
00:56:18.413807 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956685756:956687184, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430414], length 1428: SMTP
00:56:18.413810 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956687184:956688612, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430414], length 1428: SMTP
00:56:18.413854 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956668620, win 528, options [nop,nop,TS val 3477430414 ecr 3687706678], length 0
00:56:18.413854 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956671476, win 551, options [nop,nop,TS val 3477430414 ecr 3687706678], length 0
00:56:18.413920 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956688612:956690040, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430414], length 1428: SMTP
00:56:18.413920 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956674332, win 573, options [nop,nop,TS val 3477430415 ecr 3687706678], length 0
00:56:18.413920 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956677188, win 595, options [nop,nop,TS val 3477430415 ecr 3687706678], length 0
00:56:18.413924 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956690040:956691468, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430414], length 1428: SMTP
00:56:18.413938 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956691468:956692896, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430414], length 1428: SMTP
00:56:18.413940 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956692896:956694324, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430414], length 1428: SMTP
00:56:18.414048 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956694324:956695752, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
00:56:18.414052 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956695752:956697180, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
00:56:18.414065 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956697180:956698608, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
00:56:18.414067 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956698608:956700036, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
00:56:18.414174 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956700036:956701464, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
00:56:18.414177 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956701464:956702892, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
00:56:18.414190 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956702892:956704320, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
00:56:18.414192 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956704320:956705748, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
00:56:18.414299 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956705748:956707176, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
00:56:18.414302 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
00:56:18.414316 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956708604:956710032, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
00:56:18.414318 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956710032:956711460, ack 726471919, win 446, options [nop,nop,TS val 3687706840 ecr 3477430415], length 1428: SMTP
00:56:18.414424 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956711460:956712888, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414427 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956712888:956714316, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414440 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956714316:956715744, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414442 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956715744:956717172, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414546 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956717172:956718600, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414550 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956718600:956720028, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414562 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956720028:956721456, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414565 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956721456:956722884, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414670 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956722884:956724312, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414673 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956724312:956725740, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414685 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956725740:956727168, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414687 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956727168:956728596, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414793 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956728596:956730024, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414796 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956730024:956731452, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414809 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956731452:956732880, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.414811 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956732880:956734308, ack 726471919, win 446, options [nop,nop,TS val 3687706841 ecr 3477430415], length 1428: SMTP
00:56:18.575940 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956680044, win 618, options [nop,nop,TS val 3477430577 ecr 3687706840], length 0
00:56:18.575940 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956682900, win 640, options [nop,nop,TS val 3477430577 ecr 3687706840], length 0
00:56:18.575940 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956685756, win 662, options [nop,nop,TS val 3477430577 ecr 3687706840], length 0
00:56:18.575940 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956688612, win 685, options [nop,nop,TS val 3477430577 ecr 3687706840], length 0
00:56:18.575940 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956691468, win 707, options [nop,nop,TS val 3477430577 ecr 3687706840], length 0
00:56:18.576005 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956734308:956735736, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
00:56:18.576010 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956735736:956737164, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
00:56:18.576025 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956737164:956738592, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
00:56:18.576028 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956738592:956740020, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
00:56:18.576066 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956694324, win 729, options [nop,nop,TS val 3477430577 ecr 3687706840], length 0
00:56:18.576146 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956740020:956741448, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
00:56:18.576152 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956741448:956742876, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
00:56:18.576180 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956742876:956744304, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
00:56:18.576184 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956744304:956745732, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
00:56:18.576247 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956697180, win 752, options [nop,nop,TS val 3477430577 ecr 3687706840], length 0
00:56:18.576247 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956700036, win 774, options [nop,nop,TS val 3477430577 ecr 3687706840], length 0
00:56:18.576300 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956745732:956747160, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
00:56:18.576304 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956747160:956748588, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
00:56:18.576325 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956748588:956750016, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
00:56:18.576328 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956750016:956751444, ack 726471919, win 446, options [nop,nop,TS val 3687707002 ecr 3477430577], length 1428: SMTP
00:56:18.576441 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956751444:956752872, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576445 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956752872:956754300, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576467 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956754300:956755728, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576470 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956755728:956757156, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576582 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956757156:956758584, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576586 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956758584:956760012, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576606 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956760012:956761440, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576609 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956761440:956762868, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576722 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956762868:956764296, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576726 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956764296:956765724, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576746 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956765724:956767152, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576749 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956767152:956768580, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576863 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956768580:956770008, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576867 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956770008:956771436, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576889 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956771436:956772864, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.576892 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956772864:956774292, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.577004 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956774292:956775720, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.577008 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956775720:956777148, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.577028 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956777148:956778576, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.577031 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956778576:956780004, ack 726471919, win 446, options [nop,nop,TS val 3687707003 ecr 3477430577], length 1428: SMTP
00:56:18.960078 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956700036:956701464, ack 726471919, win 446, options [nop,nop,TS val 3687707386 ecr 3477430577], length 1428: SMTP
00:56:19.126678 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956701464, win 785, options [nop,nop,TS val 3477431127 ecr 3687707386], length 0
00:56:19.126735 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956780004:956781432, ack 726471919, win 446, options [nop,nop,TS val 3687707553 ecr 3477431127], length 1428: SMTP
00:56:19.126751 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956781432:956782860, ack 726471919, win 446, options [nop,nop,TS val 3687707553 ecr 3477431127], length 1428: SMTP
00:56:19.510078 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956701464:956702892, ack 726471919, win 446, options [nop,nop,TS val 3687707936 ecr 3477431127], length 1428: SMTP
00:56:19.672429 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956702892, win 796, options [nop,nop,TS val 3477431673 ecr 3687707936], length 0
00:56:19.672489 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956702892:956704320, ack 726471919, win 446, options [nop,nop,TS val 3687708099 ecr 3477431673], length 1428: SMTP
00:56:19.672494 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [P.], seq 956704320:956705748, ack 726471919, win 446, options [nop,nop,TS val 3687708099 ecr 3477431673], length 1428: SMTP
00:56:19.834765 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956704320, win 807, options [nop,nop,TS val 3477431835 ecr 3687708099], length 0
00:56:19.834765 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956705748, win 818, options [nop,nop,TS val 3477431835 ecr 3687708099], length 0
00:56:19.834818 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956705748:956707176, ack 726471919, win 446, options [nop,nop,TS val 3687708261 ecr 3477431835], length 1428: SMTP
00:56:19.834846 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687708261 ecr 3477431835], length 1428: SMTP
00:56:19.997087 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956707176, win 830, options [nop,nop,TS val 3477431998 ecr 3687708261], length 0
00:56:19.997088 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956708604, win 841, options [nop,nop,TS val 3477431998 ecr 3687708261], length 0
00:56:19.997148 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956708604:956710032, ack 726471919, win 446, options [nop,nop,TS val 3687708423 ecr 3477431998], length 1428: SMTP
00:56:20.262683 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477432263 ecr 3687708423], length 0
00:56:20.380076 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687708806 ecr 3477431998], length 1428: SMTP
00:56:20.542356 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477432543 ecr 3687708423], length 0
00:56:21.180080 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687709606 ecr 3477431998], length 1428: SMTP
00:56:21.342347 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477433343 ecr 3687708423], length 0
00:56:22.780101 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687711206 ecr 3477431998], length 1428: SMTP
00:56:22.942346 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477434943 ecr 3687708423], length 0
00:56:25.900090 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687714326 ecr 3477431998], length 1428: SMTP
00:56:26.062272 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477438063 ecr 3687708423], length 0
00:56:32.620090 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687721046 ecr 3477431998], length 1428: SMTP
00:56:32.782226 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477444783 ecr 3687708423], length 0
00:56:45.420093 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687733846 ecr 3477431998], length 1428: SMTP
00:56:45.581587 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477457582 ecr 3687708423], length 0
00:57:10.380083 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687758806 ecr 3477431998], length 1428: SMTP
00:57:10.542248 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477482543 ecr 3687708423], length 0
00:58:00.940090 IP6 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110 > 2a00:1450:400c:c07::1b.25: Flags [.], seq 956707176:956708604, ack 726471919, win 446, options [nop,nop,TS val 3687809366 ecr 3477431998], length 1428: SMTP
00:58:01.102342 IP6 2a00:1450:400c:c07::1b.25 > 2c0f:f720:0:3:d6ae:52ff:feb8:f27b.59110: Flags [.], ack 956710032, win 852, options [nop,nop,TS val 3477533103 ecr 3687708423], length 0
\
 
 \ /
  Last update: 2022-03-30 04:04    [W:0.239 / U:0.196 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site