Looking at an entry in our logs and I see:

2012-05-01T15:02:40Z WARNING NIDS Application: AM#300105032:
AMAUTHID#8A03C4C13414D78775876AF03B10A81E: A potential client ip
address spoofing attack has been detected.
The ip address of the current request, ad 7363e, does not match the ip
address previously assigned to the users session, {1}.

What possible format is: 7363e


Thank You for your help!

Jim Willeke