nee <n...@cock.li> writes: > 4. Ipv6 is not enabled by default on GuixSD
All my GuixSD machines have IPv6 addresses, and I never did anything special. > Problem: > With the default configuration `ifconfig` > and `ip addr` did not show an ipv6 address for my server. > This resulted in `prosodyctl check` printing: > > ________________________________________________________________________ > Checking DNS for host tomato.hidamari.blue... > tomato.hidamari.blue AAAA record points to unknown address > 2a03:4000:1d:1cb:: > Host tomato.hidamari.blue does not seem to resolve to this server (IPv6) > Only some targets for tomato.hidamari.blue appear to resolve to this > server. > ________________________________________________________________________ > > Workaround: > ip -6 addr add <my ipv6 address here> dev eth0 > > Proper fix: > I don't know. Something has to be changed about system/base.scm? I don't > know what exactly it is. Could you please display the output of "ip addr"? I can imagine several reasons why the autoconfiguration of your IPv6 addresses didn't work: 1. your link-local address isn't unique, 2. your router didn't send Router Advertisements, 3. your server behaves like a router because IP forwarding is enabled (most likely). See https://tools.ietf.org/html/rfc4862, https://askubuntu.com/questions/114971/ipv6-auto-configuration-not-working and https://serverfault.com/questions/380810/ipv6-stateless-autoconfiguration-not-working-on-centos-6-2.
