Re: [liblo] liblo and IPv6

Hi, Stephen.

Upon further investigation, the problem appears when NetworkManager
modifies /etc/hosts so the machine name is both associated to an IP
and an IPv6 address, like in the following example:

$ cat /etc/hosts
192.168.0.128   advent
127.0.0.1       localhost.localdomain   localhost       localhost4
::1     advent  localhost6.localdomain6 localhost6

In this situation both DSSI host and GUI can't communicate: the host
launches the GUI process, but the startup protocol never progresses to
the point the GUI is displayed on the screen. I don't know enough of
the internals of name resolution as to hazard a guess about why a
configuration like that is a problem.

Apparently this causes problems with other software too, notably kerberos.

As of 01/2011, NM developers seem to have given up on updating
/etc/hosts automatically.

https://bugzilla.redhat.com/show_bug.cgi?id=648725

Once the machine name is not associated to the IPv6 loopback address
anymore the problem disappears.

$ cat /etc/hosts
192.168.0.128   advent
127.0.0.1       localhost.localdomain   localhost       localhost4
::1     localhost6.localdomain6 localhost6

I am not sure if there is something that can be done on liblo's side
to make it more resilient to situations like this or not.

Regards,

Luis