BIRD 3.1.0, 2.17, 3.0.2, 2.16.2 released

[Ondrej Filip]

Dear BIRD Users,

we have released four versions of BIRD at once; 2.17 and 3.1.0 with 
new features and 2.16.2 and 3.0.2 fixing bugs in 2.16.1 and 3.0.1, 
respectively. It may become common in the future to keep certain 
versions stable with only fixes for some longer time.

Specifically, 3.1.0 and 2.17 have already successfully migrated to 
Debian testing, so these versions may get quite a long chain of 
updates. In 2.17 and 3.1.0, we added TCP-AO support for BGP on Linux.

We haven't found any resource for TCP-AO in any flavor of BSD; if you 
know of any, please tell us.

We also implemented graceful restart timer minima and maxima in BGP, 
format specification for link-local-only next hops in BGP, to improve 
compatibility with other routing stacks, and also we merged a new next 
hop option for IPv4 routes in Babel.

In 3.1.0, we also added a compatibility layer for show route outputs, 
to allow your BIRD 2 automation to work with BIRD 3. Please tell us if 
you find any significant difference there.

In all versions, we fixed several rare crashes in BFD and table 
removal, and other minor bugs. In 3.1.0 and 3.0.2, we also fixed quite 
some crashes in route propagation and state machines.

Also setting route gateway in 3.x by filters is now fixed.

It also looks like that some bugs in 3.1.0 slipped through our release 
process, most notably failure to build on FreeBSD 13 with Netlink and 
some strange crash on BGP neighbor flap. We are currently 
investigating that and we may release 3.1.1 soon. We apologize for for 
that.

Anyway, the packages are as always in our repository at 
https://pkg.labs.nic.cz/ and on our website at https://bird.network.cz/

Have a pleasant spring or autumn, and happy routing!
Ondrej and Maria
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