Re: Handling IPv6 BGP routes with :: next-hop

2021-08-04 Thread Alexander Shikov
Hi! On Tue, Aug 03, 2021 at 16:25:09 +0200, Ondrej Zajicek wrote: > The bgp_next_hop is ::, 'gw' a is different attribute - immediate next > hop computed from bgp_next_hop, local routing table and other factors. > That is shown after 'via' in 'show route' output. When a route is > propagated on a

Re: Handling IPv6 BGP routes with :: next-hop

2021-08-04 Thread Alexander Shikov
Hello! On Tue, Aug 03, 2021 at 15:36:02 +0200, Chriztoffer Hansen wrote: > Do you know what equipment the customer uses? (e.g. reverse lookup the > IPv6 LL EUI-64 (*ff:fe*) of the customers' equipment and map the MAC > to an OUI) > > Might be a configuration error on the customer side that the gw

Re: Handling IPv6 BGP routes with :: next-hop

2021-08-03 Thread Ondrej Zajicek
On Tue, Aug 03, 2021 at 10:13:09AM +0300, Alexander Shikov wrote: > Hello! > > Yesterday we noticed a strange behavior of Bird 1.6.8 with handling > one IPv6 BGP route: > > >birdc6 show route for 2a09:8387::: all > BIRD 1.6.8 ready. > 2a09:8387:::/48 via 2001:7f8:63::f2 on bge0 [SIMTELECO

Re: Handling IPv6 BGP routes with :: next-hop

2021-08-03 Thread Chriztoffer Hansen
On Tue, 3 Aug 2021 at 09:13, Alexander Shikov wrote: > The first (best) route has next-hop '::' and routers of some of our customers > started dropping BGP sessions with 'Invalid next-hop' cause. > > I dumped packets coming from customer 2001:7f8:63::f2 and it is really > sending next-hop > as ':

Handling IPv6 BGP routes with :: next-hop

2021-08-03 Thread Alexander Shikov
Hello! Yesterday we noticed a strange behavior of Bird 1.6.8 with handling one IPv6 BGP route: >birdc6 show route for 2a09:8387::: all BIRD 1.6.8 ready. 2a09:8387:::/48 via 2001:7f8:63::f2 on bge0 [SIMTELECOM 2021-08-03 00:07:16] * (100) [AS51972i] Type: BGP unicast univ