11.2 install - can't resolve local hostnames

I installed 11.2 with Xen yesterday using a network bridge for the LAN. It will resolve WAN i.e. internet hostnames fine, but not those on the local LAN, which i can however connect to using the ip address. /etc/resolv.conf correctly shows my router as the nameserver.

I have read a lot of posts on ipv6 / firefox issues but they don’t seem to be relevant as in all those cases internet hostnames were the problem, not local ones. I’m currently using ifup with IPv6 disabled in yast.