REQ_CID           174 net/ipv4/netfilter/nf_nat_pptp.c 		 ntohs(REQ_CID(pptpReq, cid_off)), ntohs(new_callid));
REQ_CID           268 net/ipv4/netfilter/nf_nat_pptp.c 		 ntohs(REQ_CID(pptpReq, pcid_off)), ntohs(new_pcid));