On Thu, 2018-11-08 at 08:05 -0500, Brian J. Murrell wrote:
Hi. I have NM on 1.12.4 on Fedora 29 sitting behind my Internet gateway router which has both IPv4 and IPv6 upstream connections. Recently one of my IPv6 upstream connections changed and got a new prefix. My Internet gateway handled that just fine and started announcing the new prefix in it's RAs to the LAN. However, this NM 1.12.4 machine, upon receiving the RAs from the Internet gateway seems to be resurrecting an address to the previous prefix that was being advertised by my upstream (as well as the currently advertised prefix). Even if I remove the stale address using "ip addr del", on the next received RA, NM will resurrect that old address even though it's not even one of the addresses the Internet gateway is including in it's RA. I have not restarted NM. Probably if I do, this problem will go away but I wanted to hopefully take this opportunity to provide any desired debug info to help solve this issue. Is there any useful info I can gather at this point or shall I just restart NM? Cheers, b.
Hi, 1.12.4 has https://cgit.freedesktop.org/NetworkManager/NetworkManager/commit/?id=c7d8f17094a24aec4a1a79447cda3bc208b751a5 With this, it would be expected that the prefix continues to exist for up to two hours. However, the old prefix's preferred time should also be expired right away. Did you for wait up to two hours for the prefix to disappear? Was the problem still present after two hours? Was the old addresse expired (preferred_lft)? best, Thomas
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