iflist_getbyname
struct interface_info *iflist_getbyname(const char *);
interfaces = iflist_getbyname(optarg);
intf = iflist_getbyname(ifa->ifa_name);
if ((intf = iflist_getbyname(ifname)) == NULL)
struct interface_info *iflist_getbyname(const char *);
if ((sp->intf = iflist_getbyname(dest)) != NULL)
if ((sp->intf = iflist_getbyname(ifname + 1)) == NULL)
interfaces = iflist_getbyname(optarg);
if ((*intf = iflist_getbyname(ifname)) == NULL) {
intf = iflist_getbyname(ifa->ifa_name);
if ((intf = iflist_getbyname(ifname)) == NULL)