Hi again, i just noticed my default interface has MTU 1348 so when i am connected to this one and use wg-quick it will break. Disconnecting from it first and than using wg-quick will set higher MTUs on the WireGuard interface so it wont break for ipv6.
Greetings, 53c70r On 6/2/19 12:27 PM, Silvan Nagl wrote: > Hi, > > as i already mentioned the problem persists on master branch for me. > > Greetings, > > 53c70r > > On 6/2/19 8:32 AM, XRP wrote: >> On Sun, 2019-06-02 at 01:49 +0200, Silvan Nagl wrote: >>> G'day, >>> >>> i recently upgrade WireGuard to the latest shipped Debian version >>> (0.0.20190406-1) and noticed my wg-quick created interface did not >>> come >>> up as usual anymore. (Also tried the git master branch) I tried to >>> single command trough wg-quick's automation to reproduce the error; >>> >>> automatic: >>> >>> [#] ip link add Y type wireguard >>> [#] wg setconf Y /dev/fd/63 >>> [#] ip address add X.X.X.X/32 dev Y >>> [#] ip address add fc00::XXXX/128 dev Y >>> [#] ip link set mtu XXXX up dev Y >>> [#] resolvconf -a tun.Y -m 0 -x >>> [#] wg set Y fwmark 51820 >>> [#] ip -6 route add ::/0 dev Y table 51820 >>> RTNETLINK answers: No such device >>> [#] resolvconf -d tun.Y >>> [#] ip link delete dev Y >>> >>> manual: >>> >>>> ip link add Y type wireguard >>>> wg setconf Y <(wg-quick strip /etc/wireguard/Y.conf) >>>> ip address add X.X.X.X/32 dev Y >>>> ip address add fc00::XXXX/128 dev Y >>>> ip link set mtu 1268 up dev Y >>>> resolvconf -a tun.X -m 0 -x >>>> wg set Y fwmark 51820 >>>> ip -6 route add ::/0 dev Y table 51820 >>> < RTNETLINK answers: No such device >>> >>> (MTU may be to low here so i set it higher again) >>> >>>> ip link set mtu 1420 up dev Y >>>> ip -6 route add ::/0 dev Y table 51820 (works now) >>> breaks up @ this point because of error handling... >>> >>> Additionally it could be possible the MTU isn't set correctly. >> I had a similar problem where I got a "RTNETLINK answers: No such >> device" error. After that I tried to use the wg-quick version in the >> master branch and that fixed my problem. I hope that helps. >> >> (MTU for IPv6 must be 1280 bytes at least.) >> > _______________________________________________ > WireGuard mailing list > [email protected] > https://lists.zx2c4.com/mailman/listinfo/wireguard _______________________________________________ WireGuard mailing list [email protected] https://lists.zx2c4.com/mailman/listinfo/wireguard
