Maybe not random, but some sorta hash will be useful here? And it
should not break the invariant mentioned by Maria. But for the hash we
still need some means to convert IP addresses to integer numbers,
because including IP into the hash seems to be reasonable.

On Sun, Feb 11, 2024 at 3:12 PM Max Tulyev <maxtul@netassist.ua> wrote:

 In our case no. We use the route reflector, so it should export the random route to other routers, not just use it by itself.

 On Sun, 11 Feb 2024 08:55:02 -0500
 "Darren O'Connor" <mellow.drifter@gmail.com> wrote:

 Isn't this a problem for multipath/add path to fix?

 On Sun, Feb 11, 2024, 08:43 Max Tulyev <maxtul@netassist.ua> wrote:

 Yes, that's correct. I have same routes come from different routers, and I
 want to spread the traffic between them, but if one router fails - keep it
 working using anothers.

 Okay, is it possible to get the variable as the result of the shell
 script? Like

 localpref = `cat prefpeer`

 On Sun, 11 Feb 2024 18:04:18 +0800
 Brandon Zhi <Brandon@huize.asia> wrote:

 I think the only usage for random number is for loading balance.

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 Maria Matejka via Bird-users <bird-users@network.cz>于2024年2月11日
周日06:03写道：

 Hello!

 No, it's not possible and it makes the filters non-deterministic which
 would break a critical invariant in BIRD's internal algorithms.

 If you better clarify what you are trying to achieve, we may find
another
way for you to do it, or at least convert it to a viable feature
request.

 Thank you for your understanding
 Maria
 On 2024-02-10 20:56, Max Tulyev wrote:

 Hi All,

 is it possible to add a random number to some variable in the filter?

 For example, like this:

 filter myfilter
 {
     if net ~ 192.168.11.0/24 then preference = preference +
random(10);

 ...

 --
 Maria Matejka (she/her) | BIRD Team Leader | CZ.NIC, z.s.p.o.