Messages in this thread | | | Date | Tue, 28 Jan 2014 16:20:54 +0100 | From | Nicolas Dichtel <> | Subject | Re: How to identify 6to4 and 6in4 tunnels |
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Le 28/01/2014 08:39, zhuyj a écrit : > On 01/28/2014 03:32 PM, zhuyj wrote: >> On 01/27/2014 08:59 PM, Nicolas Dichtel wrote: >>> Le 27/01/2014 11:39, zhuyj a écrit : >>>> Hi, Maintainers >>>> >>>> In our scene, we will create the 6in4/6to4 tunnel firstly and need to check the >>>> tunnel type, secondly, we will configure the ip address on it. So, Could we >>>> have >>>> any way to get the actual tunnel for 6in4 and 6to4 from current linux version? >>>> >>>> Both 6in4 and 6to4 have the same protocol “IPPROTO_IPV6” in Linux kernel. The >>>> only difference is the ip address on the tunnel. Can we distinguish them in >>>> Linux kernel? >>> Just check the prefix, like it is done in check_6rd(). >>> >>> >>> Regards, >>> Nicolas > Hi, Nicolas > Thanks for your reply. Maybe I can configure 6to4 tunnel by the following commands: > > ip tunnel add tun6to4 mode sit remote any local 1.202.252.122 ttl 64 > ip link set dev tun6to4 up > ip -6 addr add 2002:01ca:fc7a::0012:0225:2122/128 dev tun6to4 > ip -6 route add 2000::/3 via ::192.88.99.1 dev tun6to4 metric 1 > > But the kernel can not identify the tunnel is 6to4 tunnel or 6in4 tunnel > immediately. After the packets travel through this tunnel, the kernel can > identify the type of the tunnel by check_6rd. > > Is it right? As soon as you have added the ipv6 addresses, you know that this tunnel is a 6to4 tunnel. But what problem are you trying to solve?
Regards, Nicolas -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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