pfsense / HE tunnel / client vm problem

capt_scurrrvy

That looks like a Ipv6 from he.net to me ^^

That is correct. As my subject line shows.

I don't understand why the gateway isn't being set. Shouldn't that be set by pfsense? Perhaps I have DHCPv6 or router advertisement configured incorrectly? This doesn't explain why the Windows client is getting the gateway set.

I followed "Configuring IPv6 Through A Tunnel Broker Service" in the docs.

Should I manually set the Centos 8 vm gateway using IPV6_DEFAULTGW in the ifcfg- file?

Gertjan

@capt_scurrrvy said in psfense / HE tunnel / client vm problem:

Shouldn't that be set by pfsense?

Set any of these :

except "Disabled" and pfSense should signal devices that it is a router = gateway.

Your OS should react on it.
Can't say more, as I don't know Centos at all.

capt_scurrrvy

@gertjan
Pfsense has been set to Managed from the start.

I've tried Centos, Debian, and Devuan. None of them get the gateway set. I'll try FreeBSD next. Frustratingly only Windows has worked. Maybe I'll try ReactOS for fun.

Thanks for trying.

Gertjan

@capt_scurrrvy said in psfense / HE tunnel / client vm problem:

Debian

I just created a HyperV instance from scratch, attached a Debian Buster ISO, mapped the VM instance to the "LAN" interface already used by my pfSense instance, and fired up debian, the installer started, I choose the minimum options (no graphics, just a SSH access).
I did not have to login, the debian VM got a IPv4 and a IPv6 from the 'dhcp server pfSense':

johnpoz

@capt_scurrrvy said in psfense / HE tunnel / client vm problem:

I am trying to go ipv6 only for this learning adventure.

That is going to be very problematic - since the VAST majority of stuff on the net is not IPv6.. Your going to be very limited to where you can actually go ;)

capt_scurrrvy

@johnpoz
As it is for learning, the number of available site does not bother me.

Frustratingly, I have now failed to get FreeBSD to work. So Linux and FreeBSD fail to browse the web.

Windows 8 still working with no issue. Browses the web no problem.

There is something I am not seeing. To have one VM that works and the others not is disappointing. I also don't understand how the linux machines can get an address but cannot browse.

Gertjan

@capt_scurrrvy said in psfense / HE tunnel / client vm problem:

.... cannot browse.

That's far to generic as a fault description.
These two words can be easily broke down into :
Gateway not known -no route to gateway.
DNS not set => resolving doesn't work.

When I installed the "Debian Buster 10.7 ISO", I had it's 'network interface' attached to the "virtual LAN switch", created by Hyper-V, the one that pfSense, also a VM, uses. It is also attached to a physical NIC called LAN, so I can use more physical devices on the LAN.
During the install, the Debian started to do a massive apt-get to update and install most needed packages.
I've added a

iface 
     iface eth0 inet6 dhcp

To the /etc/networking/interfaces to kick off IPv6 using the DHCP6 server on pfSense's LAN.

You have the single default firewall rule on your pfSense, right ?

capt_scurrrvy

@gertjan

Thank you for trying to solve this.

Promox is the host with a bridge vmbr2 configured. Pfsense vm LAN nic and the test vm's nic are connected to vmbr2.

I am currently trying Debian 10's live CD.

Shortening my full ipv6 address to just the last part.

ip address shows for ens18:
::fffa/128 (fffa being inside the range of ff00 to ffff I configured for dhcp6 server on pfsense)
fe80::a518/64

ip -6 route show
::fffa
::/64
fe80::/64
default via fe80::1:1

DNS and ping6 work. I ping6 -c 2 www.yahoo.com and get a successful dns lookup of an ipv6 address and two successful pings.

By browser, I mean web browser, specifically Firefox. Type www.google.com in address bar and eventually get error server not found or time out. I don't remember which error.

I then tried apt-get update. It displays the ipv6 address of where it is trying to go but eventually times out.

johnpoz

@capt_scurrrvy said in psfense / HE tunnel / client vm problem:

fe80::a518/64

You understand that is link-local, you would not be able to get past your local network with such an address. Ie while you could look up stuff via local dns, you wouldn't be able to get to the internet, just like you ca not get to the internet with a rfc1918 address. Or a 169.254.x.x address

capt_scurrrvy

@johnpoz
Understood. fe80 is local-link.
Why is pfsense not providing the GW?
Why does ping6 work? DNS works. The ipv6 address for DNS is the LAN interface on pfsense.

I don't like Windows (not wanting to start a comment war), but it works. I only turned off ipv4 in the properties. It is set to get ipv6 automatically.

Next is to try setting the default route manually. Would that be the address of the LAN nic on pfsense?

capt_scurrrvy

Side question:
Is there a way to edit the title of this thread? I noticed today I typed psfense instead of pfsense.

johnpoz

Um so windows got a global address? If all your linux has a link-local, still not going anywhere even if it uses a link-local gateway. Unless you natted your link-local ipv6 to a global ipv6. Which isn't how it works ;)

Lets see the output of windows ipconfig /all

edit: I edited your title for you.

Also show us the ifconfig for you linux.. Here is my linux box with working IPv6

See how it has a global address, along with its link local address.

capt_scurrrvy

@johnpoz
I believe what you are asking for is in the post above. Under Windows 8 config.
I don't remember if that was ipconfig or ipconfig /all. The routes are there too.

Thanks.

johnpoz

Sorry I missed that - yeah it has a global address.. Does your linux?

edit: Oh missed that too - it does.. But your routing table is not correct..

Here for example is my default route on actual interface

It can point to the link-local of your gateway. But not going to work on your lo interface.

capt_scurrrvy

@johnpoz
In that same post is my test Centos 8 vm. It did get assigned an address, but from the route list, doesn't look like the default route gets set.

johnpoz

Your default is set, but only for lo - which never going to work.

capt_scurrrvy

@johnpoz
So is that Centos failing to request a route from the pfsense DHCP6 server or similarly failing to get the pfsense router advertisement?

johnpoz

Clients do not get "routes" from dhcpv6.. Not how IPv6 works. RA is used..

capt_scurrrvy

@johnpoz
Does that mean pfsense's router advertisement is not sending the information?

capt_scurrrvy

I noticed the fe80 address of the LAN nic of pfsense is being set automatically as the default route on the linux box.

[root@localhost ~]# ip -6 route
unreachable ::/96 dev lo metric 1024 error -113 pref medium
unreachable ::ffff:0.0.0.0/96 dev lo metric 1024 error -113 pref medium
2001:470:1f1d:bc::ff04 dev eth1 proto kernel metric 100 pref medium
2001:470:1f1d:bc::/64 dev eth1 proto ra metric 100 pref medium
unreachable 2002:a00::/24 dev lo metric 1024 error -113 pref medium
unreachable 2002:7f00::/24 dev lo metric 1024 error -113 pref medium
unreachable 2002:a9fe::/32 dev lo metric 1024 error -113 pref medium
unreachable 2002:ac10::/28 dev lo metric 1024 error -113 pref medium
unreachable 2002:c0a8::/32 dev lo metric 1024 error -113 pref medium
unreachable 2002:e000::/19 dev lo metric 1024 error -113 pref medium
unreachable 3ffe:ffff::/32 dev lo metric 1024 error -113 pref medium
fe80::/64 dev eth1 proto kernel metric 100 pref medium
fe80::/64 dev eth0 proto kernel metric 256 pref medium
default via fe80::8802:71ff:fe34:93cb dev eth1 proto ra metric 100 pref medium

I don't understand why that would happen.

The ifcg_eth1 file

DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy