MEDIUM_ID         114 include/linux/inetdevice.h #define IN_DEV_MEDIUM_ID(in_dev)	IN_DEV_CONF_GET(in_dev, MEDIUM_ID)
MEDIUM_ID        2524 net/ipv4/devinet.c 		DEVINET_SYSCTL_RW_ENTRY(MEDIUM_ID, "medium_id"),