Endless Avahi system.log errors

[Adam Dershowitz]

I have Avahi port installed due to a dependency.  I recently noticed  
that my system.log contains this repeated every 10 seconds:

Feb  2 14:16:35 Macintosh org.freedesktop.avahi-dnsconfd[808]:  
connect(): No such file or directory
Feb  2 14:16:35 Macintosh org.freedesktop.avahi-dnsconfd[808]: Failed  
to connect to the daemon. This probably means that you
Feb  2 14:16:35 Macintosh org.freedesktop.avahi-dnsconfd[808]: didn't  
start avahi-daemon before avahi-dnsconfd.
Feb  2 14:16:35 Macintosh com.apple.launchd[1] (org.freedesktop.avahi- 
dnsconfd[808]): Exited with exit code: 1
Feb  2 14:16:35 Macintosh com.apple.launchd[1] (org.freedesktop.avahi- 
dnsconfd): Throttling respawn: Will start in 10 seconds
Feb  2 14:16:36 Macintosh org.freedesktop.avahi-daemon[809]: Found  
user 'avahi' (UID 502) and group 'avahi' (GID 502).
Feb  2 14:16:36 Macintosh org.freedesktop.avahi-daemon[809]:  
Successfully dropped root privileges.
Feb  2 14:16:36 Macintosh org.freedesktop.avahi-daemon[809]: avahi- 
daemon 0.6.22 starting up.
Feb  2 14:16:36 Macintosh org.freedesktop.avahi-daemon[809]: WARNING:  
No NSS support for mDNS detected, consider installing nss-mdns!
Feb  2 14:16:36 Macintosh org.freedesktop.avahi-daemon[809]:  
dbus_bus_get_private(): Failed to connect to socket /opt/local/var/run/ 
dbus/system_bus_socket: No such file or directory
Feb  2 14:16:36 Macintosh org.freedesktop.avahi-daemon[809]: WARNING:  
Failed to contact D-Bus daemon.
Feb  2 14:16:36 Macintosh com.apple.launchd[1] (org.freedesktop.avahi- 
daemon[809]): Exited with exit code: 255
Feb  2 14:16:36 Macintosh com.apple.launchd[1] (org.freedesktop.avahi- 
daemon): Throttling respawn: Will start in 10 seconds

I found this:  http://lists.macosforge.org/pipermail/macports-users/2007-October/006496.html 
  that seems to relate, but I am not sure why the stream of errors.   
Any suggestions about why and what to do about it?
I am not even sure if this is really a macports issue or an avahi  
issue, but I figured that this is the right place to start.  It looks  
like something is perhaps not installed or configured correctly?

Thanks,

--Adam