Bug#892105: i40e
On Fri, 29 Jun 2018 09:33:56 +0200 "=?utf-8?q?J=C3=B6rg?= Kost" <jk@ip-clear.de> wrote:
> Run into a similar issues with i40e. I found out that the i40e driver
> included in linux-image-4.9.0-6-amd64 drops ARP requests randomly if the
> interface is not configured into promiscuous mode (e.g. tcpdump
> running). Therefore if the switch / router expires or invalidates its
> arp cache, the system may not be reachable until the next ARP request
> will get randomly accepted & answered.
We have the same problem here with the newest Stretch 4.9 kernel. When using a secondary IP address the i40e driver starts to randomly ignore ARP requests and makes the system unreachable for the rest of the network.
Upgrading to a backport kernel (4.19) with newer 4.19 driver fixes the problem.
Is there a change to backport a fix into 4.9 stable? I40e is a very widely used driver for Intel NICs.
Greetings,
Dominik
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