> I'm inclined to disagree.
> when pinging a local interface address for a p2p link, some
> IPv4 implementations send the ping out the link, and gets it
> back from the remote router, as a way of verifying connectivity.
>
> implementing your suggestion prevents the option of doing
> something similar for IPv6. let the packets bounce between
> the two routers for a while, in the end you'll get a time
> exceeded message anyway.
Hmm. I'm not familiar with that IPv4 practice. itojun already mentioned
the DoS concern. When it's an innocent error, I also think that it will
be difficult to diagnose the time exceeded and realize the problem is a
typo in the destination address instead of a routing loop.
Rich
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