<div dir="ltr"><div>That was it! Thank you!</div><div><br></div><div>In case it is useful for anyone else, here's my entire config (ASNs and IPs anonymized):</div><div><br></div><div># start config<br></div><div>router id 127.0.0.1;<br><br>vpn4 table vpntab4;<br>vpn6 table vpntab6;<br><br>protocol bgp peer1 {<br> local as 65321;<br> neighbor 192.168.42.1 as 65321;<br> hold time 180;<br> vpn4 mpls {<br> table vpntab4;<br> import all;<br> };<br> vpn6 mpls {<br> table vpntab6;<br> import all;<br> extended next hop;<br> };<br>}</div><div># end config</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Fri, Aug 24, 2018 at 12:24 PM Jan Maria Matejka <<a href="mailto:jan.matejka@nic.cz">jan.matejka@nic.cz</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I suspect you are missing the "extended next hop" option in your<br>
BGP protocol config.<br>
<br>
Thanks<br>
Maria<br>
<br>
On 08/24/2018 07:02 PM, Chris Herdt wrote:<br>
> When I run bird in debug mode, I do see a lot of messages about missing next hop:<br>
> <br>
> bird: peer1: Missing next hop address<br>
> bird: peer1: Invalid NEXT_HOP attribute<br>
> bird: peer1: Invalid NEXT_HOP attribute<br>
> bird: peer1: Invalid NEXT_HOP attribute<br>
> [etc.]<br>
> <br>
> When I examine the update packets coming in for IPv6 route announcements, the next hop is an IPv4 address in this format (addresses changed for anonymity):<br>
> <br>
> ::ffff:192.168.42.6<br>
> <br>
> I have also tried a couple different things in my config files to explicitly set the next hop address, but the next hop address is still missing:<br>
> <br>
> filter setnexthop<br>
> ip explicit_next_hop;<br>
> {<br>
> explicit_next_hop = fd12:3456:789a:1::1;<br>
> bgp_next_hop = explicit_next_hop;<br>
> accept;<br>
> }<br>
> <br>
> ...<br>
> <br>
> vpn6 mpls {<br>
> table vpntab6;<br>
> missing lladdr ignore;<br>
> next hop self;<br>
> import filter setnexthop;<br>
> };<br>
> <br>
> <br>
> Anyone have any advice?<br>
> <br>
> Thanks,<br>
> <br>
> On Thu, Aug 23, 2018 at 8:42 PM Arvin Gan <<a href="mailto:AGan@advaoptical.com" target="_blank">AGan@advaoptical.com</a> <mailto:<a href="mailto:AGan@advaoptical.com" target="_blank">AGan@advaoptical.com</a>>> wrote:<br>
> <br>
> Hi ,____<br>
> <br>
> From your protocols info, “BGP Next hop: ::” in channel vpn6-mpls, if next hop is empty, the route is withdrawn. Suggest to check it.____<br>
> <br>
> __ __<br>
> <br>
> Best Regards,____<br>
> <br>
> Arvin Gan____<br>
> <br>
> __ __<br>
> <br>
> *From:*Bird-users <<a href="mailto:bird-users-bounces@network.cz" target="_blank">bird-users-bounces@network.cz</a> <mailto:<a href="mailto:bird-users-bounces@network.cz" target="_blank">bird-users-bounces@network.cz</a>>> *On Behalf Of *Chris Herdt<br>
> *Sent:* Friday, August 24, 2018 5:48 AM<br>
> *To:* <a href="mailto:bird-users@network.cz" target="_blank">bird-users@network.cz</a> <mailto:<a href="mailto:bird-users@network.cz" target="_blank">bird-users@network.cz</a>><br>
> *Subject:* vpn6-mpls routes on BIRD 2____<br>
> <br>
> __ __<br>
> <br>
> Thanks to the list for all the help you've given me so far!____<br>
> <br>
> __ __<br>
> <br>
> Another question: I am running BIRD 2.0.2 and peering with a host that is announcing vpn4 mpls and vpn6 mpls routes.____<br>
> <br>
> __ __<br>
> <br>
> The vpn4 mpls routes are working, but all of the vpn6 mpls routes appear as withdrawn routes. I'm not sure why -- I looked at the packet capture in Wireshark and the UPDATE messages containing the IPv6 routes all show zero for Withdrawn Routes Length. Any ideas?____<br>
> <br>
> __ __<br>
> <br>
> Here's the result of 'show protocols all peer1' (addresses changed):____<br>
> <br>
> __ __<br>
> <br>
> bird> show protocols all peer1<br>
> Name Proto Table State Since Info<br>
> peer1 BGP --- up 14:35:04.353 Established <br>
> BGP state: Established<br>
> Neighbor address: 192.168.42.1<br>
> Neighbor AS: 65321<br>
> Neighbor ID: 192.168.42.1<br>
> Local capabilities<br>
> Multiprotocol<br>
> AF announced: vpn4-mpls vpn6-mpls<br>
> Route refresh<br>
> Graceful restart<br>
> 4-octet AS numbers<br>
> Enhanced refresh<br>
> Neighbor capabilities<br>
> Multiprotocol<br>
> AF announced: vpn4-mpls vpn6-mpls<br>
> Route refresh<br>
> Extended next hop<br>
> IPv6 nexthop: ipv4 ipv4-mc<br>
> Graceful restart<br>
> Restart time: 120<br>
> AF supported: vpn4-mpls vpn6-mpls<br>
> AF preserved:<br>
> 4-octet AS numbers<br>
> Session: internal multihop AS4<br>
> Source address: 192.168.100.1<br>
> Hold timer: 12.954/15<br>
> Keepalive timer: 0.005/5<br>
> Channel vpn4-mpls<br>
> State: UP<br>
> Table: vpntab4<br>
> Preference: 100<br>
> Input filter: ACCEPT<br>
> Output filter: REJECT<br>
> Routes: 9771 imported, 0 exported<br>
> Route change stats: received rejected filtered ignored accepted<br>
> Import updates: 9771 0 0 0 9771<br>
> Import withdraws: 20 0 --- 20 0<br>
> Export updates: 9771 9771 0 --- 0<br>
> Export withdraws: 0 --- --- --- 0<br>
> BGP Next hop: 192.168.100.1<br>
> IGP IPv4 table: master4<br>
> Channel vpn6-mpls<br>
> State: UP<br>
> Table: vpntab6<br>
> Preference: 100<br>
> Input filter: ACCEPT<br>
> Output filter: REJECT<br>
> Routes: 0 imported, 0 exported<br>
> Route change stats: received rejected filtered ignored accepted<br>
> Import updates: 0 0 0 0 0<br>
> Import withdraws: 2785 0 --- 2785 0<br>
> Export updates: 0 0 0 --- 0<br>
> Export withdraws: 0 --- --- --- 0<br>
> BGP Next hop: ::<br>
> IGP IPv6 table: master6____<br>
> <br>
> __ __<br>
> <br>
> <br>
> -- ____<br>
> <br>
> Chris Herdt<br>
> <a href="https://osric.com/chris/____" rel="noreferrer" target="_blank">https://osric.com/chris/____</a><br>
> <br>
> <br>
> <br>
> -- <br>
> Chris Herdt<br>
> <a href="https://osric.com/chris/" rel="noreferrer" target="_blank">https://osric.com/chris/</a><br>
<br>
</blockquote></div><br clear="all"><br>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div>Chris Herdt<br><a href="https://osric.com/chris/" target="_blank">https://osric.com/chris/</a></div></div></div>