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Re: Someones being naughty again...
> On Sat, 14 Mar 1998, Blake Willis wrote: > > It _does_ break things if not done with very careful attention. Most of > the people using it have no clue about how it can break things and are > bewildered when it is explained to them. > > For example? A router with one ATM interface going to the world with a > high MTU with an ethernet on the other side. Say you use private IP space > for links on that router. Say someone on the Internet filters traffic > from private netblocks; lots of people do. There _can_ be machines that > are completely unable to transfer data (eg. download a web page) from > another because you just broken path MTU discovery. This is not a made up > situation, this is a real example that I have had to deal with of how > using private IP space for > network interfaces used for public traffic does break things in some > situations. Also protocols like CUSeeMe that embed IP addresses in the protocol will break for any leaf nodes that have a private netblock address. > >