I'm getting the following error when attempting to start syslog-ng:

# ./S74syslog start 
io.c: bind_inet_socket() bind failed 172.16.65.61:514 Cannot assign requested address
Error initializing configuration, exiting.

here is the line in the syslog-ng.conf file that is setting up a the corresponcidg source:

source net_tcp { tcp( ip(172.16.65.61) port(514) ); };

Does anyone know what the error means and how I can get around it? 

I appreciate any help you can provide.

Thanks!