Hacker News Reader

You mean proxy ARP?

Pretty much, but more like proxy ARP on steroids, sort of proxy DNS, proxy ARP, proxy everything.

Proxy ARP it's a thing and it is exactly what you've described :)

And if by proxy DNS you mean you'll subvert ARP to reach a DNS server... that's proxy ARP. DNS is a few layers above :)

Definition:

Proxy ARP is the technique in which one host, usually a router, answers ARP requests intended for another machine. By "faking" its identity, the router accepts responsibility for routing packets to the "real" destination.

And it is a super dirty network hack. Unfortunately can't put that genie back in the bottle.

Reply on news.ycombinator.com