MAC adrɛs nhyehyɛe a ɛwɔ proxy mu betumi ayɛ adwuma wɔ komputer a ɛbɛn Squid server no so, nanso ɛbɛyɛ ɔhaw wɔ komputer a ɔsɛ ne ho a ɔwɔ subnet foforo so. Router no sesa nea proxy no betumi ahu.

ARP boa ma wohu IPv4 ɔyɔnko link-layer adrɛs wɔ local link so, nanso ɛmfa Ethernet adrɛs no nkɔ hop biara mu. Hwɛ nsɛm no nyinaa wɔ Borɔfo nsɛm no mu.

Nsɛm a ɛfa ho