[FROG] IS-IS MTU in FRR

[Mark Tinka]

Hi all.

As I've been unable to find anyone in the (NOG) community who has had
any experience running IS-IS on FRR, I figured I'd set it all up and see
how well it works.

My first major road block is the below:

2020/03/21 03:12:36 ISIS: isis_send_pdu_bcast: sock_buff size 8192 is
less than output pdu size 9014 on circuit em0
2020/03/21 03:12:36 ISIS: [EC 67108865] ISIS-Adj (1): Send L2 IIH on em0
failed

I've been fiddling with all manner of MTU commands/settings both in
zebra.conf and isisd.conf, but they all don't seem to be supported.

Does anyone know how we can fix CLNS/IS-IS MTU on FRR?

I'm running FRR 7.3 on FreeBSD-12.1.

All help appreciated.

Mark.
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