rfc 1812 third party address on traceroute

Tue May 31 06:00:41 UTC 2016

I am completely innocent of rfc1812, and have been out of the game for a 
long time, but I am pretty sure I was taught (and in turn taught) that a 
router would reply using the address of the interface that originated 
the reply unless that interface was unnumbered, in which case it would 
reply from the loop-back address.

Never too old to learn something.

-- 
"Everybody is a genius.  But if you judge a fish by
its ability to climb a tree, it will live its whole
life believing that it is stupid."

--Albert Einstein

 From Larry's Cox account.