[Bug 2000001] Re: Wifi 5/6 dropped randomly if ipv6 is enabled - Bug dhcp6!!!

[Martin-Éric Racine]

** Changed in: dhcpcd (Ubuntu)
       Status: New => Incomplete

** Changed in: dhcpcd5 (Ubuntu)
       Status: New => Incomplete

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Title:
  Wifi 5/6 dropped randomly if ipv6 is enabled - Bug dhcp6!!!

Status in dhcp package in Ubuntu:
  New
Status in dhcpcd package in Ubuntu:
  Incomplete
Status in dhcpcd5 package in Ubuntu:
  Incomplete
Status in isc-dhcp package in Ubuntu:
  New
Status in network-manager package in Ubuntu:
  New
Status in network-manager-applet package in Ubuntu:
  New
Status in wicd package in Ubuntu:
  New

Bug description:
  Updated: 19.12.2022
  #####################

  Hi Support

  at startup of analysis:
  Wifi5/6 dropped randomly if ipv6 is enabled/disabled on gnome-network-manager-gui no Error on Logs! No red Kernel Messages.

  
  My Lab:
  At my Lab i disabled all ipv6 on my Subnet LAN Openwrt-Routers, and my Laptop loses "randomly" 20times a day the Internet but the Signal is 100% to the WIFI-Routers, no ping, no nslookup to first DSL-WAN Router possible.

  First Handling:
  After i manual enable/disable WIFI by switch is works again fast.

  
  Analysis:
  After some search on Net i disabled ipv6 in sysctl.conf !

  GTK-Apps Affected: seen on network-manager/network-manager-gnome/wicd
  Managers

  Hardware Change/Test:
  I tested / changed 3 different old wifi-5+ new wifi-6 intel AX 7260 HMW mini-pci-cards same problem!

  Now testing again..

  Thanks
  Linuxonlinehelp_eu

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: network-manager 1.10.6-2ubuntu1.4
  ProcVersionSignature: Ubuntu 5.4.0-135.152~18.04.2-generic 5.4.212
  Uname: Linux 5.4.0-135-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.9-0ubuntu7.28
  Architecture: amd64
  CurrentDesktop: ubuntu:GNOME
  Date: Sun Dec 18 11:24:20 2022
  IfupdownConfig:
   # interfaces(5) file used by ifup(8) and ifdown(8)
   auto lo
   iface lo inet loopback
  InstallationDate: Installed on 2021-08-19 (486 days ago)
  InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
  IpRoute:
   default via 192.168.71.1 dev wlp3s0b1 proto dhcp metric 600
   169.254.0.0/16 dev wlp3s0b1 scope link metric 1000
   192.168.71.0/24 dev wlp3s0b1 proto kernel scope link src 192.168.71.123 metric 600
  NetworkManager.state:
   [main]
   NetworkingEnabled=true
   WirelessEnabled=true
   WWANEnabled=true
  SourcePackage: network-manager
  UpgradeStatus: No upgrade log present (probably fresh install)
  WifiSyslog:

  http_proxy: http://127.0.0.1:8118/
  modified.conffile..etc.NetworkManager.conf.d.default-wifi-powersave-on.conf:
   [connection]
   wifi.powersave = 2
  mtime.conffile..etc.NetworkManager.conf.d.default-wifi-powersave-on.conf: 2022-06-30T19:17:37.737049
  nmcli-dev:
   DEVICE    TYPE      STATE        DBUS-PATH                                  CONNECTION  CON-UUID                              CON-PATH
   wlp3s0b1  wifi      connected    /org/freedesktop/NetworkManager/Devices/3  AXWIFI71    bec4545b-24e6-40ef-a933-43121b9b819b  /org/freedesktop/NetworkManager/ActiveConnection/3
   enp2s0    ethernet  unavailable  /org/freedesktop/NetworkManager/Devices/2  --          --                                    --
   lo        loopback  unmanaged    /org/freedesktop/NetworkManager/Devices/1  --          --                                    --
  nmcli-nm:
   RUNNING  VERSION  STATE      STARTUP  CONNECTIVITY  NETWORKING  WIFI-HW  WIFI     WWAN-HW  WWAN
   running  1.10.6   connected  started  full          enabled     enabled  enabled  enabled  enabled
  no_proxy:

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