ipsid_s
struct ipsid_s *ipl_local_cid;
struct ipsid_s *ipl_remote_cid;
struct ipsid_s *ipsid_next;
struct ipsid_s **ipsid_ptpn;
struct ipsid_s *ipsa_src_cid; /* Source certificate identity */
struct ipsid_s *ipsa_dst_cid; /* Destination certificate identity */