Hi all,

I'm using Gnus' dns.el to look up SRV records for Jabber servers in
jabber.el.  It works fine except when I move my laptop from one network
to another, because dns.el caches the list of DNS servers (obtained from
/etc/resolv.conf) in the variable dns-servers, but sometimes those DNS
servers aren't appropriate/reachable for the new network.

Thus the patch below.  It checks whether the names and IP addresses of
all network interfaces have changed, and if so, rereads /etc/resolv.conf
instead of using the value of dns-servers.  What do you think about it?

(I'm calling fboundp for network-interface-list as I'm not sure if the
relevant XEmacs versions support it.)

Regards,
Magnus