Allow to listen on multiple (but not all) addresses. I.e. multiple bind_address entries in local.ini.

It'd be nice to be able to listen to multiple addresses without having to listen on 0.0.0.0.

Format could be either:
bind_address=127.0.0.1
bind_address=10.0.0.2
bind_address=192.168.0.2

or:
bind_address=127.0.0.1 10.0.0.2 192.168.0.2

Start by tracing how the bind_address entry in local.ini is parsed and passed to the network listener. Compare the repeated-entry and space-separated formats mentioned in the issue, then verify that selected addresses are accepted while 0.0.0.0 remains unnecessary. Done means the configuration supports listening on multiple specified addresses without listening on all addresses.

Written by the indexing model from the issue text.