AT&T carrying rfc1918 on the as7018 backbone?

Fri Jan 23 00:02:33 UTC 2004

> RFC1918 addresses are unpredictable on any network other than your own.
> You shouldn't make assumptions about them. Anyone may use them for any
> purpose on their network.  If you send packets into their network using
> RFC1918 addresses, you get whatever you get. If you require certaintity
> its up to you to impose your policy at your edge.
> 
> Does sending packets to RFC1918 addresses on other networks meet the "be
> conservative in what you send" credo?

I understand all that.  We're working with the customer to harden the border
(ACLs) and possibly take a bogon feed, etc.  I was just having a hard time
believing AT&T was leaking 10/8 and that any other large provider was
accepting it so wanted to verify.

-b