Upgrade from 2.2.2 > 2.2.3 breaks HE.net tunnel; easy resolution



  • After upgrading, IPv6 stopped routing through the firewall (example from a Windows machine):

    IPv6 is through an HE.net tunnel.

    Ping…
    C:\Windows\system32>ping ipv6.google.com

    Pinging ipv6.l.google.com [2607:f8b0:4009:807::100e] with 32 bytes of data:
    Destination net unreachable.
    Destination net unreachable.
    Destination net unreachable.
    Destination net unreachable.

    Tracert…
    C:\Windows\system32>tracert ipv6.google.com

    Tracing route to ipv6.l.google.com [2607:f8b0:4009:807::100e]
    over a maximum of 30 hops:

    1    <1 ms    <1 ms    <1 ms  <redacted.lan.if>[2001:xxxx:xxxx:xxx::1]
      2  Destination net unreachable.

    Trace complete.

    The fix was to disable the HE.net IPv6 gateway (In System > Routing > edit "HEV6_TUNNELV6 (default)"). Select "Disable this gateway" & apply. Then, un-select "Disable this gateway" & apply.

    I noticed this in the previous upgrade to 2.2.2 but wasn't sure at the time which fiddle did the trick. This time, the above is all I did and it worked right away. No issue with RA or anything that I can tell (I rebooted the Windows PC as a quick check before applying the above fix).</redacted.lan.if>


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