[FROG] IS-IS Appears More Broken Than Before

[Mark Tinka]

Hi all.

I posted the below in 2020 about IS-IS in FRR (7.3, at the time):

https://seclists.org/nanog/2020/Apr/226

I gave up and moved back to Quagga with OSPF.

I decided to try again today, with FRR 8.5, on FreeBSD-13.1-RELEASE-p6.

Things seem to have taken a major step back since then. I can't even get 
an adjacency going with a Cisco IOS XE router:

2023/03/31 07:12:01 ISIS: [WDVAD-TY6HY] ISIS-LFA: failed to unregister 
RLFA with LDP
2023/03/31 07:12:01 ISIS: [WDVAD-TY6HY] ISIS-LFA: failed to unregister 
RLFA with LDP
2023/03/31 07:12:01 ISIS: [WDVAD-TY6HY] ISIS-LFA: failed to unregister 
RLFA with LDP
2023/03/31 07:12:01 ISIS: [YDRGH-0DJ94] Opened BPF device /dev/bpf0
2023/03/31 07:12:01 ISIS: [QJWNQ-3FFKM] BPF buffer len = 4096
2023/03/31 07:12:01 ISIS: [V3AHD-XE2Z5] failed to set BPF buffer len 
(4096 to 9000)
2023/03/31 07:12:01 ISIS: [W02G1-H56T1] IS-IS bpf: could not transmit 
packet on em0: Input/output error
2023/03/31 07:12:01 ISIS: [G7ZA5-AT06A][EC 67108865] ISIS-Adj (1): Send 
L2 IIH on em0 failed
2023/03/31 07:12:04 ISIS: [W02G1-H56T1] IS-IS bpf: could not transmit 
packet on em0: Input/output error
2023/03/31 07:12:04 ISIS: [G7ZA5-AT06A][EC 67108865] ISIS-Adj (1): Send 
L2 IIH on em0 failed
2023/03/31 07:12:07 ISIS: [W02G1-H56T1] IS-IS bpf: could not transmit 
packet on em0: Input/output error
2023/03/31 07:12:07 ISIS: [G7ZA5-AT06A][EC 67108865] ISIS-Adj (1): Send 
L2 IIH on em0 failed

Thoughts?

Mark.
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