[j-nsp] Bizaare bug of the year award
Dave Diller
dave at maxgigapop.net
Thu Sep 25 21:06:57 EDT 2008
> 6 Wimax-Cali-190-0-0-42.orbitel.net.co (62.154.16.234) 13.428 ms
> Wimax-Cali-190-0-0-46.orbitel.net.co (62.154.16.238) 15.618 ms
> Wimax-Cali-190-0-0-42.orbitel.net.co (62.154.16.234) 15.574 ms
>
> Only thing in common here is the 62 first octet, though you can now
> see
> that its zeroing out the top 2 bits when doing its lookup. No clue if
> there are any other patterns of IPs where this happens also, if all of
> 62.0.0.0/8 is broken, etc, but its definitely been confirmed on many
> routers.
Also, 62 + 128 = 190, so that looks like another instance of
misparsing the top bit.
-dd
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