Conversation

For no particular reason, I decided to provide ad blocking to everyone on the network I'm managing. I added a few fake entries to the DNS proxy on the router for the most common ad providers.

Does anyone know of a valid IP that will instantly come back as unreachable? I'd prefer to use something else than 127.0.0.1 as the IP. My router won't accept 0.0.0.0. I'm wondering if I could simply use one of the TESTNET addresses and add a "reject" rule for it to the firewall.