Greetings,
How would one go about routing multicast DNS packets (e.g. used for
iTunes sharing neighbourhood discovery) between two different subnets
sharing an OpenBSD router and secured by ipsec(4)?
So far from multicast(4) I have determined I need to /sbin/sysctl
net.inet.ip.mforwarding=1 and I will most likely need to NAT the
packets to alter their source address using pf(4) to fool the mDNS
client into believing the peers are on the same subnet - but it's
what comes inbetween about which I'm not certain.
Do I need to employ mrouted(8)?
This is my first foray into the bizarre world of IP multicasting...
All the HOWTOs I've seen so far describing how to share iTunes
libraries across different subnets (e.g. http://wiki.mt-daapd.org/
wiki/SSH_Tunnel ) employ an ssh tunnel and a client-side mDNS proxy
but I can't help but feel that with a network under my control and
OpenBSD routing everything there must be a more elegant solution?
Any assistance or advice will be appreciated.
Cheers,
Damon
