[juneau-lug] winbind, Could not receive trustdoms, and avahi

Recently had an issue where Samba was malfunctioning, specifically winbind.  
wbinfo -u and wbinfo -g failed, and log.winbindd had "Could not receive 
trustdoms" errors when winbindd was started.

Turns out that the avahi-daemon package had edited nsswitch.conf to make it 
look like this:

# /etc/nsswitch.conf
#
# Example configuration of GNU Name Service Switch functionality.
# If you have the `glibc-doc' and `info' packages installed, try:
# `info libc "Name Service Switch"' for information about this file.

passwd:         files winbind
group:          files winbind
shadow:         files

hosts:          files mdns4_minimal [NOTFOUND=return] dns mdns4 wins
networks:       files

protocols:      db files
services:       db files
ethers:         db files
rpc:            db files

netgroup:       nis

The key element here being the hosts line.  It is set up to first 
check /etc/hosts, then try avahi, then try dns, then try avahi again, and 
finally try wins resolution.

Samba chokes on the mdns/avahi stuff and fails to load.

The solution is to edit the hosts line to read:

hosts:  files dns wins

and nuke avahi.  I really, really, really, really hate this avahi-daemon 
package.  The only problem is that I keep doing an `apt-get --purge remove 
avahi-daemon` and the very next time that I do a dist-upgrade it's back!!!  
Once I find out which package is listing avahi-daemon as a dependency I will 
file a bug report.

James
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