[FS#3647] Kenrel 5.10 + software flow offloading breaks internet connectivity on Archer C6 v2 EU (ath79)

OpenWrt Bugs openwrt-bugs at lists.openwrt.org
Sat Feb 27 05:20:26 EST 2021


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A new Flyspray task has been opened.  Details are below. 

User who did this - K900 (K900) 

Attached to Project - OpenWrt/LEDE Project
Summary - Kenrel 5.10 + software flow offloading breaks internet connectivity on Archer C6 v2 EU (ath79)
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Medium
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Fresh compile of OpenWRT git master (reboot-15993-g464451d9ab) with CONFIG_TESTING_KERNEL=y, software offloading enabled:


❯ curl -vvv openwrt.org
*   Trying 139.59.209.225:80...
* Connected to openwrt.org (139.59.209.225) port 80 (#0)
> GET / HTTP/1.1
> Host: openwrt.org
> User-Agent: curl/7.75.0
> Accept: */*
>


(...times out eventually)

Software offloading disabled:


❯ curl -vvv openwrt.org
*   Trying 139.59.209.225:80...
* Connected to openwrt.org (139.59.209.225) port 80 (#0)
> GET / HTTP/1.1
> Host: openwrt.org
> User-Agent: curl/7.75.0
> Accept: */*
> 
* Mark bundle as not supporting multiuse
< HTTP/1.1 301 Moved Permanently
< Server: nginx
< Date: Sat, 27 Feb 2021 10:18:39 GMT
< Content-Type: text/html
< Content-Length: 178
< Connection: keep-alive
< Location: https://openwrt.org/
< 

301 Moved Permanently

301 Moved Permanently
nginx


* Connection #0 to host openwrt.org left intact


Looks like I can send data, but not receive...

The exact same system/configuration works perfectly with kernel 5.4. Also reproduces with a clean configuration.


More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3647

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