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Update validation rules for OSPF max-metric values
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Description

Old Quagga used to allow arbitrary OSPF max-metric values. Current FRR versions refuse to accept values greater than 100, so old configs can break in 1.2.0.

For 1.2.x, we auto-capped it at 100 with a commit warning, but for future versions, we need to have the CLI match the FRR rules. This will require a migration script.

Details

Difficulty level
Unknown (require assessment)
Version
1.2.3
Why the issue appeared?
Will be filled on close
Is it a breaking change?
Config syntax change (migratable)