mDNS Cheat Sheet
Avahi Discovery
avahi-browse -v -t -r --all
avahi-browse -rt _ipp._tcp
avahi-browse -rt _uscan._tcp
driverless
nsswitch.conf
In /etc/nsswitch.conf you can use mdns4 and mdns4_minimal with the latter only resolving .local addresses.
Typical configuration:
hosts: files mdns4_minimal [NOTFOUND=return] dns
To resolve non-local mDNS also:
hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4