Hi

Le 14/09/2021 à 18:45, Daniel a écrit :
Hi all,

I use wireguard between 2 Debian11 and face a problem: traffic goes in to wireguard interface/ip address but goes out with lo as interface with the right ip address

19:23:50.287492 wig0 In IP6 fd99:1234:beef:cafe:fade::7000 > fd99:1234:beef:cafe:fade::7fff: ICMP6, echo request, id 18272, seq 5, length 64

19:23:50.287509 lo In IP6 fd99:1234:beef:cafe:fade::7fff > fd99:1234:beef:cafe:fade::7000: ICMP6, echo reply, id 18272, seq 5, length 64

Any clue on this ?

Problem is in kernel vue of routing

ip route get fd99:1234:beef:cafe:fade::7000 from fd99:1234:beef:cafe:fade::7fff anycast fd99:1234:beef:cafe:fade::7000 from fd99:1234:beef:cafe:fade::7fff dev lo table local proto kernel src fd99:1234:beef:cafe:fade::7fff metric 0 pref medium

After

ip route replace fd99:1234:beef:cafe:fade::7000 from fd99:1234:beef:cafe:fade::7fff dev wig0 table local

evrything is going back to normal behavior.

Thanks for your support

--
Daniel

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