BIRD version 2.0.11

[Ondrej Filip via Bird-users]

Dear users,
We just released third stable version of BIRD this year. Many thanks
to my great colleagues and namely Santiago. Here is a list of the main
improvements:

Version 2.0.11 (2022-11-12)
  o BGP roles (RFC 9234)
  o BGP: Keepalive time scaling
  o BGP: New 'min hold time' and 'min keepalive time' options
  o BGP: New 'next hop prefer global' option
  o Filter: For loops and direct recursion
  o Filter: Mixed declarations of local variables
  o Filter: Improved static type checks
  o Filter: Literal [] for empty set
  o Linux: Netlink KRT improvements
  o BSD: Experimental support for Netlink API
  o Memory management improvements
  o Many bugfixes

Notes:


keepalive time and the hold time.







Enjoy!
        Ondrej

In contrast to prior versions, configured keepalive time in BGP now scales with negotiated hold time to maintain proportion between the The Linux KRT was updated to use the recent API for IPv6 ECMP routes instead of the legacy one. Consequently, the Linux versions older than 4.11 are no longer supported, at least for IPv6 ECMP routes. Also, routing table scanning now runs separately for each table to avoid congestion. There is a minor change in recursive next hop processing. Previously, recursive next hop must be resolved through a non-recursive route, now it must be resolved through a prefix where both the best route and all routes with the same preference (as the best route) are non-recursive. The old behavior might lead in some corner cases to an infinite loop of recursive next hop resolution due to a priority inversion. There is a minor change in the 'configure undo' command, it is no longer available after failed reconfiguration, as the old configuration is already released.

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