If they both use the same ports they cannot coexist on the same machine. Ports opened on a wildcard address cannot be used by other programs that want to open the same port on a specific address on the same machine

Ruben - ON3RVH

Yeah I sort of remembered that, but I wasn't sure. Thanks. (it might as well have been possible when the kernel first checks the specific address sockets and would fall back to the wildcard socket when none matches)

Unfortunately I have no experience with running conference software at all. When a conference can run via a proxy, it can still be done on a single machine! Just configure all the conference addresses as proxies, make these private, and connect the conferences to those. All UDP I/O will be via the wildcard sockets and the TCP connects can be local on the same machine.

(selected proxies can be made private by configuring something like Password_51=mysecretpassword while the global setting is Password=PUBLIC)

Rob