I would like to set up kamailio in order to listen to multiple port.

I have set :
port=5060
port=5228

But it always listen on the port indicated on last line:

Listening on 

             udp: 127.0.0.1:5228

             udp: x.x.x.x:5228

             tcp: 127.0.0.1:5228

             tcp: x.x.x.x:5228

Aliases: 


I don't have any "listen" in my config file.


Is it supposed to work like that ?