On Sun, Jul 27, 2025 at 11:51:25PM +0200, Omar Polo wrote: > Florian Obser <flor...@openbsd.org> wrote: > > RFC 4291 2.1: > > All interfaces are required to have at least one Link-Local unicast > > address > > thanks for the pointer! Now my question becomes how to add such address > to a wg(4) device however. > > I've tried with a (dumb, but here's all i know) `inet6 autoconf' on the > wg device, as well as trying to add an address inside fe80::/10 manually > (inet6 fe80:fdd0::1/64 with or without alias, in hostname.if) to no > avail. > > I mean: > # ifconfig wg3 create > # ifconfig wg3 inet6 autoconf > # ifconfig wg3 > wg3: > flags=2480c3<UP,BROADCAST,RUNNING,NOARP,MULTICAST,AUTOCONF6TEMP,AUTOCONF6> > mtu 1420 > index 14 priority 0 llprio 3 > wgport 32884 > groups: wg > > but if I s/wg3/tap0 I get a fe80::something/64 address on it. > > > > With that in mind, read in6_ifattach() and weep. > > ouch!
wg(4) does not repsect any RFC and especially for IPv6 it is very opinionated. It does not do link local addresses and also does not do autoconfiguration or neighbor discovery. -- :wq Claudio
