Multiple mt-daapd instances in the same machine?

I’d like to run several mt-daapd services at the same time in the same machine using different databases in order to split a large music library into more easily (roku-)browsable chunks.
One library for classical music, another for rock etc.

I believe Bonjour port number is fixed and there can be only one service running in one machine at the same time.
I can of course create several virtual network interfaces with their own ip addresses.
Is it possible to bind mt-daapd processes to use a specific network interface or ip?