weird avahi problem

[ø]

i don't know if anyone's going to be able to help me on this. i tried
the upstream avahi list¹ to no avail, so i'm thinking that it's unlikely
that anyone else is going to be able to help, but i'm going to try!

so i have multiple computers running lubuntu on the home network. just
got a new laptop, a Lenovo G700. all the computers on the network talk
nice to one another through .local addressing that avahi provides.

…except for the new laptop. here's what's TOTALLY bizarre:
 * new laptop can't connect to addresses with .local
 * all the other computers can talk to new laptop with .local
 * avahi-browse and avahi-resolve -n works fine in both directions
 * /etc/hosts, /etc/resolv.conf, /etc/nsswitch.conf are identical on all
   machines

i've restarted the router, so it's not an issue with caching.

any clues?!

wxl

¹ http://lists.freedesktop.org/archives/avahi/2014-March/002293.html