nanog mailing list archives

Re: rfc 1812 third party address on traceroute


From: Randy Bush <randy () psg com>
Date: Wed, 01 Jun 2016 21:39:54 -0700

               .-----------------.
               |                 |
               |               B |--------- D
    S ---------| A      R        |
               |               C |--------- (toward S)
               |                 |
               `-----------------'

of course, simpletons such as i would desire the source of the time
exceeded message to be A.  after all, this is the interface to which i
sent the icmp with the TTL to expire.

Do you mean the source address or the source interface?

the source address

I'm not sure if you mean that, if sent through C it should have the
source addres of A, or that it should actually be sent through A
regardless of the routing table (which sounds better to me).

not to me.  i have kinda grown used to fibs

randy


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