IP Header Validation extension

[Justin Deoliveira <jdeolive@xxxxxxxxxxxxxxx>]

Hello all,

I am wondering if anyone knows of the existance of a module/extension I 
can use to perform ip header validation. I want to do things like :

1. check the version (4 or 6)
2. make sure the total length field actual matches the length of the packet
3. check various options

Thanks.

Justin