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DHCPv6 prefix delegation `sla-id` limited to 128
Closed, ResolvedPublicBUG


The sla-id parameter of DHCPv6 prefix delegations is limited to 128.
While this is enough to use all /64 subnets of a /57 prefix, with a /56 prefix that is no longer sufficient. Is there an reason for this low limit? May I open a Phabricator ticket for this?

Originally reported via


Difficulty level
Easy (less than an hour)
Why the issue appeared?
Will be filled on close
Is it a breaking change?
Perfectly compatible
Issue type
Bug (incorrect behavior)

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Event Timeline

c-po changed the task status from Open to In progress.May 27 2022, 6:34 AM
c-po claimed this task.
c-po triaged this task as Normal priority.
c-po created this task.
c-po changed Difficulty level from Unknown (require assessment) to Easy (less than an hour).
c-po changed Is it a breaking change? from Unspecified (possibly destroys the router) to Perfectly compatible.
c-po changed Issue type from Unspecified (please specify) to Bug (incorrect behavior).
c-po moved this task from In Progress to Finished on the VyOS 1.3 Equuleus (1.3.2) board.