On 7/20/21 9:40 AM, Andy Botting wrote:
- IPv6 broken with flow offloading (according to reports, potentially
related to hw flow offloading)
There is a bug report about this at:
- https://bugs.openwrt.org/index.php?do=details&task_id=3373
I've reproduced it with and without hw flow offloading on mt7621.
I think it's very important to do something about this issue before
the release, as it took me nearly a week to track down. I found it
quite hard to isolate as it's like some packets just disappear, so
makes for a very bad user experience.
Hi,
Thank you for the link and the description on how to reproduce this:
while [ 1 ]; do curl -k -s -o /dev/null -L -I -w "%{http_code}
'%{time_total}'\n" -H 'Host: www.6connect.com'
https://[2607:fae0:a000::9]; sleep 1; done
I see this problem once every 250 tries, but I got a wireshak capture.
A TCP package is lost and we get the next one after 6 seconds. I would
have expected a retransmission much earlier.
I have to check that I do not see this without the offloading and then
also capture before the device.
Hauke
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