nanog mailing list archives
Re: rfc 1812 third party address on traceroute
From: William Herrin <bill () herrin us>
Date: Tue, 31 May 2016 14:22:36 -0400
On Tue, May 31, 2016 at 12:08 PM, Octavio Alvarez <octalnanog () alvarezp org> wrote:
.-----------------. | | | B |--------- D S ---------| A R | | C |--------- (toward S) | | `-----------------'
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).
Howdy, That doesn't make sense. There may be multiple next hops out A. If the next hop in the FIB is out C, how would the router pick the next hop to send to out A? Anyway, Randy's comment was about source address selection, not routing. With the packet coming from S into interface A, he'd prefer that the ICMP error message be sourced from the IP address assigned to A, not the IP address assigned to C or R. Regards, Bill -- William Herrin ................ herrin () dirtside com bill () herrin us Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>
Current thread:
- rfc 1812 third party address on traceroute Randy Bush (May 30)
- Re: rfc 1812 third party address on traceroute Mikael Abrahamsson (May 30)
- Re: rfc 1812 third party address on traceroute Larry Sheldon (May 30)
- Re: rfc 1812 third party address on traceroute Job Snijders (May 31)
- Re: rfc 1812 third party address on traceroute Owen DeLong (May 31)
- Re: rfc 1812 third party address on traceroute William Herrin (May 31)
- Re: rfc 1812 third party address on traceroute Octavio Alvarez (May 31)
- Re: rfc 1812 third party address on traceroute Hugo Slabbert (May 31)
- Re: rfc 1812 third party address on traceroute William Herrin (May 31)
- Re: rfc 1812 third party address on traceroute Mikael Abrahamsson (May 30)