taglinefilesource code
ETH_P_IP577drivers/net/slip.creturn(NET16(ETH_P_IP));
ETH_P_IP599drivers/net/slip.cif(type!=ETH_P_IP)
ETH_P_IP627drivers/net/slip.ccase ETH_P_IP:
ETH_P_IP509net/inet/arp.cif (((arp->ar_pro != NET16(0x00CC) && dev->type==3) || (arp->ar_pro != NET16(ETH_P_IP) && dev->type!=3) ) || arp->ar_pln != 4) 
ETH_P_IP629net/inet/arp.carp->ar_pro = htons(ETH_P_IP);
ETH_P_IP123net/inet/dev.cNET16(ETH_P_IP),
ETH_P_IP131net/inet/eth.cif(type!=ETH_P_IP)
ETH_P_IP185net/inet/ip.cmac = dev->hard_header(ptr, dev, ETH_P_IP, daddr, saddr, len);