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Re: New router feature - icmp error source-interface [was: icmp rpf]
Patrick W. Gilmore wrote:
On Sep 25, 2006, at 9:06 AM, Ian Mason wrote:ICMP packets will, by design, originate from the incoming interface used by the packet that triggers the ICMP packet. Thus giving an interface an address is implicitly giving that interface the ability to source packets with that address to potential anywhere in the Internet. If you don't legitimately announce address space then sourcing packets with addresses in that space is (one definition of) spoofing.
I do. I have suggested much the same in the past.