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#11
Questions & Answers / paris not routing IPv6?
Last post by lmamane - July 28, 2025, 04:42:12 AM
My tunnel over tserv10.par1 / tserv1.par2 seems not to route IPv6 anymore; it shows as "up" on https://tunnelbroker.net/status.php/ It worked this morning and I didn't change anything... Are other users of that tunnel server encountering the same?

I can ping the server tunnel endpoint over IPv4.
I can ping the server tunnel endpoint FROM ANOTHER IPv6 host but NOT from the tunnel.
I cannot ping anything IPv6 over the tunnel, nor the client tunnel endpoint from another IPv6 host.
With tcpdump, I do see IPv4 packets with protocol IPv6 (41) outgoing from my machine to the IPv6 tunnel endpoint, but nothing coming back.
#12
This is a cmd-file that is running in the Windows Scheduler.
#13
powershell .\AAAA_by_Name.ps1
#14
This is a powershell script, that is working fine in scheduler in Windows.

It updates two dynamic AAAA records every 5 minutes from the scheduler starting from windows laod using account 'NT\Network Service'.

I have allowed to run 'unsigned powershell scripts'.
#15
$Names = @("vEthernet (L0)", "vEthernet (L1)")
$Hostnames = @("computer_name.connection_0.domain.zone","computer_name.connection_1.domain.zone")
$Passwords = @("key_0","key_1")

$ipv6Addresses = @()

for ($Counter = 0; $Counter -lt 2; $Counter++) {
    $Name = $Names[$Counter]
    $Hostname = $Hostnames[$Counter]
    $Password = $Passwords[$Counter]

    $ipv6Address = Get-NetIPAddress -InterfaceAlias $Name -AddressFamily IPv6
    if ($ipv6Address) {
        $filteredAddress = $ipv6Address | Where-Object {
            $_.PrefixOrigin -eq 'RouterAdvertisement' -and
            $_.SuffixOrigin -eq 'Link'
        }
        if ($filteredAddress) {

            $Foundipv6Address = $filteredAddress.IPAddress

            $Foundipv6AddressFeet = "$Foundipv6Address"

            $ipv6Addresses += $Foundipv6Address

            Write-Host "Found IPv6 addresses:" $Foundipv6AddressFeet
           
            Write-Host

            $URL = "https://$Hostname"+":$Password@dyn.dns.he.net/nic/update?hostname=$Hostname&myip=$Foundipv6AddressFeet"

            Write-Host $URL
           
            Write-Host

            curl.exe $URL

        } else {
            Write-Host "IPv6 address $Name not found"
        }
    } else {
        Write-Host "Interface $Name not found"
    }
}

if ($ipv6Addresses.Count -gt 0) {
    Write-Host "Found IPv6 addresses:"
    $ipv6Addresses | ForEach-Object { Write-Host " - $_" }
}
#16
Questions & Answers / Re: no answer from peer at he....
Last post by buedi - July 27, 2025, 01:46:31 AM
I have the same issue, using the same endpoint, but from an OPNsense. All lights are green and I can see that I send traffic to the tunnel, but I never get a reply.
I opened a thread on the OPNsense forums today and asking for help how to debug this, just to make sure it is not a configuration mistake on my side. But reading your post, using the same endpoint, maybe we did it correctly (or the same mistake ;-))?
#17
How can i make automatic dynamic AAAA and A record registration from Windows Network Settings from IPv6 and IPv4 settings: where do i enter Registration URL or Update Key directly?
#18
Questions & Answers / Re: IPV6 tunnel and MTU issue ...
Last post by snarked - July 25, 2025, 03:29:54 PM
Then set it to 1400, as you discovered.

HE tunnels should handle up to 1480.
Wireguard (encrypted) tunnels handle 1420.
I don't know of anything that reduces MTU to 1400, other than the combination of both tunnel types.
#19
Questions & Answers / Re: Is tserv1.lon working ? al...
Last post by skerry - July 23, 2025, 09:41:21 AM
Yup, same here - literally came back here now to post that. Thanks!
#20
Questions & Answers / Re: Is tserv1.lon working ? al...
Last post by ngregory - July 23, 2025, 09:08:52 AM
This now seems resolved for me.