I had hoped it used gethostbyname() or better getipnodebyname() or getnameinfo(), which if the host's lookup mechanism were configured appropriately, might use a variety of services (including multicast DNS/Bonjour). But I'm guessing it bypasses all that and uses the resolver directly, because it's not working on an entry like
0.0.0.0 lapple.local
to pick up an mDNS resolution. That would have taken care of me as I moved around and connected remotely via a VPN, given that I set up a script to register my transitory VPN address when I'm connected that way, and when I'm at home, the automatic Bonjour registration with my (DHCP but actually static) address would have happened instead.
Is there an option to tell xymonnet to use one of the above calls instead of the resolver?