[FS#3373] IPV6 flow offload broken

OpenWrt Bugs openwrt-bugs at lists.openwrt.org
Mon Sep 6 17:41:28 PDT 2021


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FS#3373 - IPV6 flow offload broken
User who did this - stephen (stephenseiber)

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details ipv6 is borked when offloading is enabled. steps to reproduce have ipv6 on and turn on software or hardware offloading. this effects visiting ipv6 primary sites like google, youtube, facebook etc. it effects all connections to ipv6 sites. how is ipv6 borked well when you go to an ipv6 website it will sometimes load instantly like ipv4 but every other or every reload will take several seconds to load or timeout.
fix is to either disable ipv6 or offloading or
turn on software offloading
for software offloading i havent confirmed this to work but i would think this does go to the custom rules of ur fire wall and add this 
ip6tables -D FORWARD -m comment --comment "!fw3: Traffic offloading" -m conntrack --ctstate RELATED,ESTABLISHED -j FLOWOFFLOAD
then ssh into the device

uci set firewall. at include[0].reload="1"
uci commit firewall
service firewall restart
and you should have offloading working and ipv6

for hardware offloading do this
turn on software and hardware offloading
go to the custom rules of ur firewall and add this 
ip6tables -D FORWARD -m comment --comment "!fw3: Traffic offloading" -m conntrack --ctstate RELATED,ESTABLISHED -j FLOWOFFLOAD --hw
then ssh into ur router
uci set firewall. at include[0].reload="1"
uci commit firewall
service firewall restart

i havent tried with software offloading cause it works with hardware offloading for me
i am using OpenWrt SNAPSHOT r17482-6f2044c2d7
on 	MikroTik RouterBOARD 760iGS
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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=3373#comment10054

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