Messages in this thread | | | Date | Tue, 28 Jan 2014 18:18:57 +0800 | From | zhuyj <> | Subject | Re: How to identify 6to4 and 6in4 tunnels |
| |
On 01/28/2014 03:39 PM, zhuyj wrote: > 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? > > Best Regards! > Zhu Yanjun > > Hi, David
I want to identify sit interface 6to4 or 6in4 with the following parameters.
include/uapi/linux/if_tunnel.h ... struct ip_tunnel_parm { char name[IFNAMSIZ]; int link; __be16 i_flags; <---------I want to use this variable to identify the type of sit interface. Can I? __be16 o_flags; __be32 i_key; __be32 o_key; struct iphdr iph; }; ...
Please comment on this ? Thanks a lot.
Best Regards! Zhu Yanjun -- 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/
| |