sdp_addr 129 include/linux/netfilter/nf_conntrack_sip.h unsigned int (*sdp_addr)(struct sk_buff *skb, sdp_addr 1113 net/netfilter/nf_conntrack_sip.c ret = hooks->sdp_addr(skb, protoff, dataoff, sdp_addr 672 net/netfilter/nf_nat_sip.c .sdp_addr = nf_nat_sdp_addr,