tag	line	file	source code
ifr_mtu	1205	net/inet/dev.c	ifr.ifr_mtu = dev->mtu;
ifr_mtu	1216	net/inet/dev.c	if(ifr.ifr_mtu<1 || ifr.ifr_mtu>3800)
ifr_mtu	1218	net/inet/dev.c	dev->mtu = ifr.ifr_mtu;