Geert Hendrickx wrote: > The format of this file is very easy: > > hostname ether_addr > > e.g.: > > 192.16.1.20 00:12:bf:02:b4:ff I think ethers(5) is not meant to be fed into arp -f. arp -f expects hostname ether_addr but ethers(5) is ether_addr hostname. Regards, ND