> ahcpd and babel are dying with EINVAL on
> setsockopt(IPV6_ADD_MEMBERSHIP), because they call this on
> interfaces with no address (namely the vpn interfaces).
That's the expected behaviour if the interfaces have no link-local
address yet. This shouldn't happen if they do have one.
> I don't think that should be a fatal error
I guess I could sleep(1) and try again... but I'd rather clarify the
issue.
> (it works again after restarting openvpn, but.).
Hmm, there could be a race condition somewhere. Have a look at
/etc/openvpn/up.huponomos, which does the following:
ip -6 addr add "$addr"/64 dev ${interface}
notify ahcpd and babel of the new interface
/etc/init.d/babel stop
/etc/init.d/ahcpd stop
sleep 1
/etc/init.d/ahcpd start
/etc/init.d/babel start
As far as I can tell, there's no race condition in the above, but
I may be mistaken.
Juliusz
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