SADB_SAFLAGS_PFS
{ SADB_SAFLAGS_PFS, "pfs", NULL },
sadb_comb->sadb_comb_flags |= SADB_SAFLAGS_PFS;
if (sadb_sa->sadb_sa_flags & SADB_SAFLAGS_PFS)
sadb_sa->sadb_sa_flags |= SADB_SAFLAGS_PFS;