nf_conntrack_proto_gre.c does not have the changes for IPv6 l4 handling, similar to nf_conntrack_proto_scp.c, nf_conntrack_proto_udplite.c and nf_conntrack_proto_dccp.c. Ignatius Cheng | Principal Engineer - Software Broadcom Limited.| (O) 604-233-8513 x38513 ignatius.cheng@xxxxxxxxxxxx