imi 454 net/ipv4/arp.c int imi, omi = -1; imi 461 net/ipv4/arp.c imi = IN_DEV_MEDIUM_ID(in_dev); imi 462 net/ipv4/arp.c if (imi == 0) imi 464 net/ipv4/arp.c if (imi == -1) imi 473 net/ipv4/arp.c return omi != imi && omi != -1;