IPSECCTL_OPT_COLLAPSE
if (opts & IPSECCTL_OPT_COLLAPSE) {
if (opts & IPSECCTL_OPT_COLLAPSE) {
if (opts & IPSECCTL_OPT_COLLAPSE) {
if ((ipsec->opts & IPSECCTL_OPT_COLLAPSE) && (last != NULL) &&
opts |= IPSECCTL_OPT_COLLAPSE;