nfs broken after upgrade from 10.04 to 12.04

[scar]

Marius Gedminas @ 01/07/2014 05:45 AM:
> Maybe check the firewall configuration?

i can telnet to the server on port 2049 and get connected, as well as
the other ports for the other daemons (which have changed since last
writing).  however, i noticed i can't connect to the rpcbind on port
111, maybe because it is only listening on the ipv6 interface?  could
that be the hold up?  is there a way to make it listen on the ipv4
interface like the other daemons?

$ sudo netstat -tnlvp|grep 111
tcp6       0      0 :::111                  :::*            LISTEN
12328/rpcbind
$