Messages

Thanks alot madj42 for testing!
And Thank you very much franco for the quick and constructive patch session =)

Will be nice to see 6rd fully functional again in the next release.

I have just created the PR: https://github.com/opnsense/core/pull/4635

Hi

I think I have a proper solution for my /64 issue.
Instead of setting the calculated /64 subnet length on the _stf interface, I set the original ISP provided subnet length.
And change the gateway to be inside the ISP provided prefix instead of the calculated /64.

https://github.com/mhofer117/core/commit/bbad554d3c

Together with the patches from franco, it is working great so far with connectivity on LAN and from the firewall itself.

@madj42 are you willing to test this on your setup too?

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opnsense-patch -a mhofer117 bbad554d3c


Regards,
Marcel

I can confirm on opnsense-20.7.8, with:

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opnsense-patch f4e2728b81 866ec6df74
the ipv6 default route for 6rd is recognized again!

Hi Franco

Thanks a lot for the quick investigation!

Unfortunately, your patch does not yet work.
The reason is that the WAN interface is igb0, but the STF interface gets created with the wan interface key (opt2) as prefix instead of igb0, so it is ccalled opt2_stf and /tmp/opt2_stf_routerv6.
However the code currently checks for /tmp/igb0_stf_routerv6.

For now i patched it as follows to make it work:

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diff --git a/src/opnsense/mvc/app/library/OPNsense/Routing/Gateways.php b/src/opnsense/mvc/app/library/OPNsense/Routing/Gateways.php
index d17bc382c..4a88ba6cf 100644
--- a/src/opnsense/mvc/app/library/OPNsense/Routing/Gateways.php
+++ b/src/opnsense/mvc/app/library/OPNsense/Routing/Gateways.php
@@ -245,6 +245,13 @@ class Gateways
                         }
                         $gwkey = $this->newKey($thisconf['priority'], !empty($thisconf['defaultgw']));
                         $this->cached_gateways[$gwkey] = $thisconf;
+                    } elseif (file_exists("/tmp/{$ifname}{$isuffix}_router{$fsuffix}")) {
+                        $thisconf['gateway'] = trim(@file_get_contents("/tmp/{$ifname}{$isuffix}_router{$fsuffix}"));
+                        if (empty($thisconf['monitor_disable']) && empty($thisconf['monitor'])) {
+                            $thisconf['monitor'] = $thisconf['gateway'];
+                        }
+                        $gwkey = $this->newKey($thisconf['priority'], !empty($thisconf['defaultgw']));
+                        $this->cached_gateways[$gwkey] = $thisconf;
                     } elseif (!empty($ifcfg['gateway_interface']) || substr($ifcfg['if'], 0, 5) == "ovpnc") {
                         // XXX: ditch ovpnc in a major upgrade in the future, supersede with interface setting
                         //      gateway_interface


An alternative might be to change the code where the /tmp file is written.

Regards,
Marcel

Hi, I also have this problem so I did some research today.

The logs show that the IPv6 default route is just ignored:

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Jan 23 20:24:05 gate1 opnsense[75480]: /interfaces.php: ROUTING: entering configure using defaults
Jan 23 20:24:05 gate1 opnsense[75480]: /interfaces.php: ROUTING: IPv4 default gateway set to opt2
Jan 23 20:24:05 gate1 opnsense[75480]: /interfaces.php: ROUTING: setting IPv4 default route to 144.2.xxx.xxx
Jan 23 20:24:05 gate1 opnsense[75480]: /interfaces.php: ROUTING: keeping current default gateway '144.2.xxx.xxx'
Jan 23 20:24:05 gate1 opnsense[75480]: /interfaces.php: ROUTING: IPv6 default gateway set to opt2
Jan 23 20:24:05 gate1 opnsense[75480]: /interfaces.php: ROUTING: skipping IPv6 default route


I believe the issue is the following lines were missed during the gateway handling rewrite of release 19.7:
https://github.com/opnsense/core/blob/stable/19.1/src/etc/inc/gwlb.inc#L879-L889

As a dirty workaround I did the following:

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diff --git a/src/opnsense/mvc/app/library/OPNsense/Routing/Gateways.php b/src/opnsense/mvc/app/library/OPNsense/Routing/Gateways.php
index b1efd58d5..bc733d472 100644
--- a/src/opnsense/mvc/app/library/OPNsense/Routing/Gateways.php
+++ b/src/opnsense/mvc/app/library/OPNsense/Routing/Gateways.php
@@ -261,6 +261,9 @@ class Gateways
                         $gwkey = $this->newKey($thisconf['priority'], !empty($thisconf['defaultgw']));
                         // gateway should only contain a valid address, make sure its empty
                         unset($thisconf['gateway']);
+                        if ($ifcfg['ipaddrv6'] == '6rd' && file_exists("/tmp/{$thisconf['interface']}_stf_routerv6")) {
+                            $thisconf['gateway'] = trim(@file_get_contents("/tmp/{$thisconf['interface']}_stf_routerv6"));
+                        }
                         $this->cached_gateways[$gwkey] = $thisconf;
                     } elseif (empty($thisconf['virtual'])) {
                         // skipped dynamic gateway from config, add to $dynamic_gw to handle defunct


Now the default gateway is added correctly again for the 6rd setup.

Unfortunately this is still not enough for my connection as my new ISP only gives me a single /64 which leads in the following unsolved issue:
https://github.com/opnsense/core/issues/4025
I was unable to solve that one in a proper way - it may be FreeBSD related...

Hope someone else can use this information.

Regards