Jonathan Kent  wrote:
> Been trying in vain to get daap/mdns traffic through my OpenBSD 4.1

quoted text
> firewall to talk to my mt-daap server.

>

> >From tcpdumping I can see the multicast traffic coming into sis1

> interface but not coming out of the sis0 interface so I can only assume

> that I have missed something.

As Brian already pointed out, you need to enable multicast routing.

You also need a multicast routing daemon to perform the actual

forwarding.  mrouted(8) will do for simple purposes.  I haven't

tried dvmrpd(8).
However, the first thing you want to check is the TTL of these mdns

packets.  I suspect it's 1 and they are intended as local broadcasts,

not as routable traffic.
--

Christian "naddy" Weisgerber                          naddy@mips.inka.de