Syslog messages from 0.0.0.0

Hi,
I’ve configured syslog on any PMP450 AP and SM PMP450 HG is on AP preferred mode.
On syslog server I see many messages like this:

Mar 8 10:56:46 0.0.0.0 CANOPY[PMP] High Gain: - - - state_table_event; table=SMSession; Event=SMSESMSG; MsgType=PASRSP; NewState=REGISTERED; Flag=2;
Mar 8 10:57:46 0.0.0.0 CANOPY[PMP] High Gain: - - - state_table_event; table=SMSession; Event=SMSESMSG; MsgType=PAREQTO; NewState=REGISTERED; Flag=0;
Mar 8 10:57:46 0.0.0.0 CANOPY[PMP] High Gain: - - - state_table_event; table=SMSession; Event=SMSESMSG; MsgType=PASRSP; NewState=REGISTERED; Flag=2;

where there is no IP address and so I can’t know which SM is sending the message.
How I can set any AP or SM to send also ip address in these messagges ?

Thank you.

I’ve forgot some informations… NAT is enabled in DHCP mode, if I use a static IP I see the correct IP in syslog messages.

But I need to use DHCP instead.