tag	line	file	source code
ETH_P_ARP	314	net/inet/arp.c	hlen = dev->hard_header(skb->data, dev, ETH_P_ARP, src, dst, skb->len);
ETH_P_ARP	643	net/inet/arp.c	tmp = dev->hard_header(skb->data, dev, ETH_P_ARP, 0, saddr, skb->len);
ETH_P_ARP	106	net/inet/dev.c	NET16(ETH_P_ARP),
ETH_P_ARP	158	net/inet/eth.c	if(eth->h_proto!=htons(ETH_P_ARP))  /* This ntohs kind of helps a bit! */