radvd-project / radvd

radvd | Official repository: https://github.com/radvd-project/radvd
https://radvd.litech.org/
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controlling the LLA used by radvd for RAs #131

Open Supermathie opened 4 years ago

Supermathie commented 4 years ago

TL;DR: We are running into a situation where radvd is picking the source IP for outgoing advertisements that don't want it to use.

radvd version: 2.17, debian package 1:2.17-2

Our setup:

The end result that we want to change is:

This is bad for us since that's a VIP and can move between machines.

Things we've tried:

Any suggestions here to accomplish what we want with radvd as-is?

Can we tell radvd to use a specific address as the advertisement source for this route?

Should it be modified to not choose deprecated or /128 addresses as the source for advertisements?

robbat2 commented 3 years ago

127 will help with this issue, but probably further work is needed, as you also want to avoid /128 addresses, and that code is driven by lifetime, not the /128 or the deprecated flag (which can be present even with a high lifetime)