Hi everyone, In linux/latest/source/net/netfilter/ folder, I only see we have nf_conntrack_proto_tcp.c, nf_conntrack_proto_udp.c and some other conntrack implementations for other protocols but I do not see nf_conntrack_proto for IPsec, so does it mean connection tracking cannot track ESP or AH protocol as a connection. I mean when I use "conntrack -L" command, I will not see ESP or AH connection is saved in conntrack list. Could you please help me to understand if conntrack supports that and any reasons if it does not support? Thanks a lot, Brs, Naruto