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Ubuntu 22.04LTS - Wifi issue low network speed because of IPv6

mg flag

I upgrade from Ubuntu 20.04 to 22.04LTS. I noticed that my wifi speed slowed down from 40 Mbps to 1 Mbps(max) after one hour. Again, if I reboot then it worked fine. After trying multiple suggestions online, one that worked for me:

Go into Wifi Setting and disable IPv6(Default is automatic).

Is there any other way to fix this IPv6 issue?

Pilot6 avatar
cn flag
This is the ISP issue, ask them
Yogesh Yadav avatar
mg flag
@Pilot6 I am using the dual boot, everything is fine in windows 11. Do you mean that my router automatically switches to IPV6 when possible & IPv6 is having issue because of ISP end ?
Pilot6 avatar
cn flag
IPV6 is default. But many ISPs have problems with it.
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