I have had to post this at the mikrotik forum, I assume im going to be berated and browbeaten. It is doable somehow, Ive come across paths with hops that respond from the same IP running traceroute both directions. Its got to have something to do with it starting as a prerouting-forward packet that has to change to an output packet
On Thu, Oct 22, 2015 at 10:53 AM, That One Guy /sarcasm < [email protected]> wrote: > When I add the loopback IP as the gateway for the traceroute mark it says > unreachable > > > On Thu, Oct 22, 2015 at 6:37 AM, Mike Hammett <[email protected]> wrote: > >> I haven't found a method of IP conservation I'm happy with while still >> routing at each tower. If I have MPLS underneath and use tunnels >> everywhere, I now have a bunch of IPs for tunnels between each PE to each >> tower instead of just between each router. At some number of PEs, I'll have >> more IPs in use there than if I just routed tower to tower. >> >> *shrugs* >> >> >> >> ----- >> Mike Hammett >> Intelligent Computing Solutions >> http://www.ics-il.com >> >> ------------------------------ >> *From: *"That One Guy /sarcasm" <[email protected]> >> *To: *[email protected] >> *Sent: *Thursday, October 22, 2015 1:40:02 AM >> *Subject: *[AFMUG] still trying to get traceroute to reply from loopback >> >> >> Im still working at getting traceroutes from any direction to reply from >> the same IP, would prefer it be the loopback that is used for OSPF router >> IDs too. There are two reasons, one is to conserver our ARIN allocation and >> to not have our internal IP space visible to customers (we are using 172. >> stuff) >> >> with mangle in the prerouting chain I can identify it by looking at ttl >> of 1. >> >> I can set the action to increment by one and get it to forward up to the >> next hop so the response of that and the second look duplicated. >> >> Ive tried marking the packet and setting the gateway to the loopback ip, >> but it doesnt seem to work, depending on what i do it either continues to >> go to the next hop or it just kills the traceroute. >> >> Im wondering if its got to do with the loopback being /32 or if its that >> im stupid, probably a little of both. >> >> Where is butch at? >> >> -- >> If you only see yourself as part of the team but you don't see your team >> as part of yourself you have already failed as part of the team. >> >> > > > -- > If you only see yourself as part of the team but you don't see your team > as part of yourself you have already failed as part of the team. > -- If you only see yourself as part of the team but you don't see your team as part of yourself you have already failed as part of the team.
