SIP_HDR_FROM 302 net/netfilter/nf_conntrack_sip.c [SIP_HDR_FROM] = SIP_HDR("From", "f", "sip:", skp_epaddr_len), SIP_HDR_FROM 275 net/netfilter/nf_nat_sip.c if (!map_sip_addr(skb, protoff, dataoff, dptr, datalen, SIP_HDR_FROM) ||