IF_NAMESIZE
#define IFNAMSIZ IF_NAMESIZE
assert(IF_NAME_LEN >= IF_NAMESIZE);
char ifname[IF_NAMESIZE+1];
char ifstring[IF_NAMESIZE + 3*sizeof (ifindex) + sizeof (" ()") + 1];
char if_name[IF_NAMESIZE];
#ifndef IF_NAMESIZE
char name[IF_NAMESIZE+1];
bufsiz >= IF_NAMESIZE) {
#ifndef IF_NAMESIZE
if (size > (IF_NAMESIZE - 1)) {
# ifdef IF_NAMESIZE
# define LIFNAMSIZ IF_NAMESIZE