nanog mailing list archives
Re: rfc 1812 third party address on traceroute
From: Josh Reynolds <josh () kyneticwifi com>
Date: Sun, 5 Jun 2016 21:55:06 -0500
I'm assuming you'd like this behavior on EdgeOS changed? I know a guy... On Jun 5, 2016 8:41 PM, "Randy Bush" <randy () psg com> wrote:
is anyone seeing the dreaded rfc1812 behavior in a citable fashion? how common is it?we verified that the juniper and cisco platforms we tested replied with the source address being the ingress interface. this is, imiho, good. a kind soul actually sent citable testsAt least my MikroTik RB850Gx2, running 'latest stable' (RouterOS v6.32.2) replies with the outbound interface, not the inbound. I'd assume this is because by default, icmp_errors_use_inbound_ifaddr in linux is disabled, and they haven't changed the default. No idea if that can be tweaked in the weird maze of mikrotik configoptions. and from the same kind engineerAnd just to add even more inconsistency, I checked on my Ubiquiti EdgeMax (a VyOS fork) which does let me check the state of sysctls: router:/etc/sysctl.d$ cat 30-vyatta-router.conf <snip> # Send ICMP responses with primary address of exiting interface net.ipv4.icmp_errors_use_inbound_ifaddr=1 </snip> So someone in Vyatta decided to explictly set this to be enabled.so one win and one loss randy
Current thread:
- Re: rfc 1812 third party address on traceroute Marc Storck (Jun 01)
- Re: rfc 1812 third party address on traceroute William Herrin (Jun 01)
- Re: rfc 1812 third party address on traceroute Marc Storck (Jun 01)
- <Possible follow-ups>
- Re: rfc 1812 third party address on traceroute Octavio Alvarez (Jun 01)
- Re: rfc 1812 third party address on traceroute Hugo Slabbert (Jun 01)
- Re: rfc 1812 third party address on traceroute William Herrin (Jun 01)
- Re: rfc 1812 third party address on traceroute Octavio Alvarez (Jun 01)
- Re: rfc 1812 third party address on traceroute Randy Bush (Jun 01)
- Re: rfc 1812 third party address on traceroute Randy Bush (Jun 05)
- Re: rfc 1812 third party address on traceroute Josh Reynolds (Jun 05)
- Re: rfc 1812 third party address on traceroute Randy Bush (Jun 05)
- Re: rfc 1812 third party address on traceroute Josh Reynolds (Jun 05)
- Re: rfc 1812 third party address on traceroute William Herrin (Jun 01)