I was setting up my laptop for traveling and adding Wireguard VPN configuration.

The Wireguard config generated by router only contains IPv4 address (10.0.5.x), and while testing the VPN to my surprise “what is my ip” websites can find my IPv6 address (I USB tethered mobile connection to my laptop).

It looks like NetworkManager does nothing about IPv6 connection if VPN doesn’t have IPv6 settings, which is bad for road warrior type of VPN configuration.

Is there an easy toggle to turn of IPv6 if VPN is connected and otherwise? Or is only option to disable all IPv6 no matter what?

  • LainTrain@lemmy.dbzer0.com
    25·
    1 day ago

    I’d also like to know, is there a way to just turn off this ipv6 trashfire? Preferably in a universal, cross-distro way?

    Seems like the most universal way is: GRUB_CMDLINE_LINUX_DEFAULT=“ipv6.disable=1”

    • corsicanguppy@lemmy.caEnglish
      1·
      9 hours ago

      I keep hoping someone will come up with a half-measure that looks like ipv4 with an extra octet and writable in hex.

      • Let people stew a bit on their 00c0a8011f IP which is like a 192.168.1.31 IP.
      • increment the big number. Oh shit, we’ve got lots.
      • repeat
      • start adding the cool parts of ipv6
      • moar
      • add a 00 to the end that old shit just skips
      • somewhere in there, switch the engine

      We can either take yeeeears to do it well, or we can take more decades to try and big-bang it. This ain’t 1983.

    • Supermariofan67@programming.dev
      71·
      1 day ago

      Or you could just… learn to use the modern internet that 60% of internet traffic uses? Not everyone has a dedicated IPv4 anymore, we are in the days of mobile networks and CGNAT. IPv4 exhaustion is here today.

    • axzxc1236@lemm.eeOP
      21·
      1 day ago

      In my case just disable IPv6 in WiFi is enough.

      sysctl looks like the most universal way.

      net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1