RTAX_IFP
#define INFO_IFP(I) ((I)->rti_info[RTAX_IFP])
case RTAX_IFP:
ifpaddr = rtinfo->rti_info[RTAX_IFP];
#define rti_ifpaddr rti_info[RTAX_IFP]
info.rti_info[RTAX_IFP] = NULL;
info.rti_info[RTAX_IFP] =
if ((sa = rti_info[RTAX_IFP]) != NULL) {
if ((sa = rti_info[RTAX_IFP]) != NULL) {