sip_nat           655 net/netfilter/nf_nat_sip.c static struct nf_ct_helper_expectfn sip_nat = {
sip_nat           664 net/netfilter/nf_nat_sip.c 	nf_ct_helper_expectfn_unregister(&sip_nat);
sip_nat           683 net/netfilter/nf_nat_sip.c 	nf_ct_helper_expectfn_register(&sip_nat);