On Tue, Nov 16, 2010 at 07:54:58PM +0200, Michael S. Tsirkin wrote: > > <snip> > > Let's let the user pass in the IP address? That would solve the > portability issue. Further, we could be doing IPv6, right? > So you'd need IPV6_MULTICAST_IF? > Also - you might also want to control > IP_MULTICAST_LOOP/IPV6_MULTICAST_LOOP?
IP address seems like a good alternative and does indeed get rid of the messy platform-specific bits. The multicast code all assumes IPv4. For instance, it uses v4-only parse_host_port to get the multicast destination address. Given that, I'm not going to bother shoehorning in IPV6_MULTICAST_IF.
