I am assuming that ser2net devices convert UDP packets to serial data? If so then I don’t see why it would not work. But, this is only one way, Voyager does not have any dragscript elements to receive serial (or UDP) data.
I have two uses for the UDP TX function: a) to send commands to one or more 3rd party applications that I write so the Voyager dragscript can control those tasks, and b) to send status reports to remote applications (again that I write) so I can use those programs to do various things that currently Voyager cannot.
For example, I have a program called ATrack which precisely keeps a target on a pixel by changing the RA/DEC motor rates. Before I had to manually coordinate between Voyager moving to another target and AT changing profiles and resetting tracking parameters for the new target. Currently I use the serial port voyager element to do this, but it requires virtual serial ports to link Voyager to AT. With UDP I will not have to do that.