nf_ct_h323: incomplete TPKT (fragmented?)

Hi,

I've recently enabled nf_conntrack_h323 module on my Fedora 12
kernel: 2.6.31.12-174.2.22.fc12.i686 iptables-1.4.5-1

This machine is a firewall/router for my internal h323 gateway/gatekeeper.

I do receive quite often this message
kernel: nf_ct_h323: incomplete TPKT (fragmented?)

Any ideas on how to solve this or what does it actually means?

regards,

Giannis

Its an invalid length value in the TPKT header. Do you happen to know whether these are actually H.323 packets?