[zeromq-dev] UDP support

[Martin Lucina]

sustrik at 250bpm.com said:
> I know! The problem is that UDP is actually UDP encapsulation of PGM 
> reliable multicast protocol. So to have it available you have to specify 
> --with-pgm when doing configure.

It might be clearer to rename the 'udp' transport to 'pgm+udp' to make it
obvious that it's not plain old SOCK_DGRAM unicast UDP, especially if we do
get around to implementing the latter at some stage.

-mato