accessing devices running on a server with 2 interfaces
several use case exists to install a server on several subnetworks.
I think the good way to do this would be to put an environment variable bind-address in /etc/tangorc, exactly the same way it is done in other services, e.g. MariaDB (https://mariadb.com/kb/en/library/configuring-mariadb-for-remote-client-access/#editing-the-defaults-file).
bind-address should allow several addresses.
It seems to me backward compatibility could be easily assured by keeping current behaviour by default (publishing on first IP address found).
Thus, if bind-address is defined in /etc/tangorc (or elsewhere) TANGO service will publish on this or these addresses.
Does this sound OK and feasible to you?