Oh or skip that abd just use pen ( http://siag.nu/pen/ ) to get the traffic from 53->whatever port (can’t remember if haproxy supports udp)

huh. I haven't heard of this one. Seems like it's been around a while? Why might I use this compared to something more well known? haproxy doesn't seem to do generic udp, but maybe linux virtual server or something like that?

shrug -- it's just something I've used to do it, if it's a single server then I guess a simple iptables rule would also do the trick :}