Toke Høiland-Jørgensen <t...@toke.dk> writes: > Stefan Haller <stefan.hal...@stha.de> writes: > >> Hi Jason, >> >> On Thu, Apr 15, 2021 at 06:05:03PM -0600, Jason A. Donenfeld wrote: >>> I spent the day playing around with bird and babel and sorted out >>> FreeBSD's v6 situation. Basically, ff00::/8 addresses are treated >>> differently, and they're blocked unless the interface sets >>> IFF_MULTICAST. So I've committed >>> https://git.zx2c4.com/wireguard-freebsd/commit/?id=a7a84a17faf784857f076e37aa4818f6b6c12a95 >>> to do this. >> >> That is also what I observed. Without IFF_MULTICAST I see the following >> error in bird's log: >> >> bird[8045]: babel1: Socket error: IPV6_MULTICAST_IF: Can't assign requested >> address >> bird[8045]: babel1: Cannot open socket for wg1 >> >>> Stefan - please let me know if those work for you. In my testing thus >>> far, things seem to work for me. >> >> After applying Toke's patch for bird and your Wireguard patch in >> a7a84a17faf784 everything is working as before (with minor config >> changes). >> >> Just for the record, my previous configuration looked like this (using >> POINTTOPOINT interfaces, I use ifconfig to set the peer address): >> >>> [Interface] >>> ... >>> Address = fe80::5/64 >>> PostUp = ifconfig %i inet 169.254.42.5/32 169.254.42.2 >> >> My new configuration without POINTTOPOINT, but only a single peer >> directly attached to other side of the wg tunnel: >> >>> [Interface] >>> ... >>> Address = 169.254.42.5/32, fe80::5/64 >>> PostUp = route add 169.254.42.2 -iface %i >> >> So for me everything works as expected again. A big thanks to all of you for >> figuring out what was going wrong and getting it fixed so quickly. > > Great! You're welcome :)
Stefan, any chance you could test this patch to Bird (*instead of* the previous one that removes the check from the Babel code)? -Toke diff --git a/sysdep/bsd/krt-sock.c b/sysdep/bsd/krt-sock.c index c2faa23dd44f..cd89544063c7 100644 --- a/sysdep/bsd/krt-sock.c +++ b/sysdep/bsd/krt-sock.c @@ -665,6 +665,9 @@ krt_read_ifinfo(struct ks_msg *msg, int scan) else f.flags |= IF_MULTIACCESS; /* NBMA */ + if (fl & IFF_MULTICAST) + f.flags |= IF_MULTICAST; + iface = if_update(&f); if (!scan)