[tor-talk] RFC1918 addresses on outside interface

[temp5 at tormail.org]

> Running a non-exit Tor relay on Linux and have iptables set up to block
> inbound and outbound RFC1918 addresses on the outside interface. Notice in
> the firewall logs several seemingly random private IP addresses connection
> attempts to my relay port getting dropped on the outside over the past few
> months. The MAC address associated with these matches my ISP's default
> gateway.
>
> Does Tor do some type of loopback on the outside int.? Or is my ISP doing
> something peculiar with NAT?

Assuming it's my ISP, is there any way to configure my relay to discourage
clients in my AS from using it as an entry point?

PS. Should I be asking this on the relays list instead?