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</o:shapelayout></xml><![endif]--></head><body lang=ZH-CN link="#467886" vlink="#96607D" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'>Hello Ilham,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'>Looks like this is not a same bug. There should be a missing condition in next-hop resolving.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'>Which router produces these warning?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'>How it connects to 1.2.3.4/5.6.7.8/9.1.2.3, by WireGuard?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'>What are interface types of those connections? (`show ospf interface ospfv3v6` will tell)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'>Regards,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'>Soha<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.5pt;font-family:"Aptos",sans-serif'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> Ilham Maulana <ilhamsupernatural@gmail.com> <br><b>Sent:</b> Monday, March 11, 2024 5:02 PM<br><b>To:</b> Soha Jin <soha@jin.sh><br><b>Cc:</b> Soha Jin via Bird-users <bird-users@network.cz><br><b>Subject:</b> RE: BIRD 2.15<o:p></o:p></span></p></div></div><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>Hello Soha,<o:p></o:p></span></p><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>Thank you. It works with 'ecmp off'.<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>One more thing I notice in Bird 2.15, is this warning message.<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>---<o:p></o:p></span></p></div><div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>Kernel dropped some netlink messages, will resync on next scan.<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>ospfv3v6: Unexpected case in next hop calculation<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>ospfv3v6: Cannot find next hop for LSA (Type: 2001, Id: 0.0.0.0, Rt: 1.2.3.4)<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>ospfv3v6: Unexpected case in next hop calculation<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>ospfv3v6: Cannot find next hop for LSA (Type: 2001, Id: 0.0.0.0, Rt: 5.6.7.8)<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>ospfv3v6: Unexpected case in next hop calculation<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>ospfv3v6: Cannot find next hop for LSA (Type: 2001, Id: 0.0.0.0, Rt: 9.1.2.3)<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>--<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>Here's the simple topology.<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>Router A - Router B - Router C.<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>Router B got LSA information from from A and C, and install it in B' routing table.. and( I guess) forward it to its adjacent neighbor.<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>Router C does not install the LSA Information of Router A in OSPF Database and vice versa.<o:p></o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>Thanks.<o:p></o:p></span></p></div><blockquote style='border:none;border-left:solid windowtext 1.0pt;padding:0cm 0cm 0cm 8.0pt;margin-left:0cm;margin-top:15.0pt;margin-bottom:5.0pt'><p style='margin-top:7.5pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#AAAAAA'>On 11/03/2024 14:19:57, Soha Jin <soha@jin.sh> wrote:<o:p></o:p></span></p><div><p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-US style='font-size:10.0pt;font-family:"Arial",sans-serif;color:black'>Hello Ilham, <br><br>You can disable ECMP with `ecmp off;` in the protocol `ospfv3v6` as a workaround (if you don’t need ECMP). <br><br>Since 31aa62ae6d2e111e87c08b4b27a16ead968f0689, OSPFv3 will use direct route for pointopoint interfaces. Unfortunately, kernel doesn’t support multipath with a device only route, so there is a ! on the route. <br><br>BIRD v2.15 ready. <br>bird> show route <br>Table master4: <br>192.88.99.0/24 unicast [ospf2 14:55:01.553] * I (150/20) [1.9.1.9] <br>dev wg-main <br>dev wg-main2 <br><br>Table master6: <br>2001:db8:272::/48 unicast [ospf1 14:55:01.553] ! I (150/20) [1.9.1.9] <br>dev wg-main <br>dev wg-main2 <br><br>I am drafting a patch to fix it. <br><br>Regards, <br>Soha <br><br>---------------------------------------------- <br>From: Bird-users On Behalf Of Ilham Maulana <br>Sent: Monday, March 11, 2024 12:27 PM <br>To: Ondrej Filip ; Ondrej Zajicek via Bird-users <br>Subject: Re: BIRD 2.15 <br><br>Hello, <br><br>After upgrading to 2.15, OSPFv3 is broken. Previously working on 2.14. No configuration changes. <br><br>This capture taken from router with Bird 2.15 installed. <br><br>-------------------------------- <br>OSPF route from router with Bird 2.15. it has ! sign. <br><br>birdc show route all 2a05:abcd:abcd:abcd::/128 <br>BIRD 2.15 ready. <br>Table master6: <br>2a05:abcd:abcd:abcd::/128 unicast [ospfv3v6 2024-03-11 10:05:40] ! I (150/10) [1.1.1.1] <br>dev wg6 <br>dev wg7 <br>Type: OSPF univ <br>OSPF.metric1: 10 <br>OSPF.router_id: 1.1.1.1 <br><br><br>----------------------------------------------------- <br>OSPF route from router with Bird 2.14, working as expected, with * sign. <br><br>birdc show route all 2a05:abcd:abcd:abcd::3/128 <br>BIRD 2.15 ready. <br>Table master6: <br>2a05:abcd:abcd:abcd::3/128 unicast [ospfv3v6 2024-03-11 08:23:55] * I (150/10) [192.168.99.141] <br>dev wg2 <br>Type: OSPF univ <br>OSPF.metric1: 10 <br>OSPF.router_id: 192.168.99.141 <br><br>Any idea, what's going on? <br><br><o:p></o:p></span></p></div></blockquote></div><p class=MsoNormal style='text-align:justify;text-justify:inter-ideograph'><span lang=EN-US style='border:solid windowtext 1.0pt;padding:0cm'><img width=1 height=1 style='width:.0104in;height:.0104in' id="Picture_x0020_1" src="cid:~WRD0001.jpg" alt="Image removed by sender. db9d2b2e-8584-49c3-9a35-0f4b93fea0bb"></span><span lang=EN-US><o:p></o:p></span></p></div></div></body></html>