ip_nat_sdp_port   461 net/ipv4/netfilter/nf_nat_sip.c 	    !ip_nat_sdp_port(skb, dptr, datalen, mediaoff, medialen, port))
ip_nat_sdp_port   495 net/ipv4/netfilter/nf_nat_sip.c 	rcu_assign_pointer(nf_nat_sdp_port_hook, ip_nat_sdp_port);