Hi again, Since my servers have 2 nics, I want to use the internal nic for the ICP traffic... But I am a bit confused by the udp params. >From the doc: # If udp_outgoing_address is set to 255.255.255.255 (the default) # it will use the same socket as udp_incoming_address. Outgoing using the same socket as incoming is fine with me, so I tried: udp_incoming_address 192.168.17.11 udp_outgoing_address 255.255.255.255 But my siblings won't talk. >From the doc: # NOTE, udp_incoming_address and udp_outgoing_address can not # have the same value since they both use port 3130. So I created eth aliases just for udp_outgoing_address, which works but is a bit overkill... By curiosity, I tried to put the same IP for incoming and outgoing and it seems to work fine... I understand incoming has to listen on a specific port but why would outgoing use this and only this same specific port...? What am I getting wrong? Thx, JD