Hi,

I am looking at a strange problem while receiving RSVP packets. In our system, we send and receive RSVP packets using 
RAW sockets. The problem we are seeing is this:

Packets are sent properly from the source node and the packets reach the destination. Correctly. We verified that the 
packet received in our example had totlen field on IP header as 264. However, when we receive the packets through 
recvfrom interface along with the IP header, the totlen field is now 244 instead of 264. Rest of the header looks good.

The only layer between the point where tcp dump sniffs packet and the application is the iopkt layer. Can someone shed 
some light on what might be happening here?

Thanks,
Santosh