Messages

Hi @Franco

As expected problem fixed after reflashing the device with latest OPNSense release, redo standard config and now IPv6 works perfect :)


Thanks again for all your help,

Vincèn

It's difficult to guide you through this without the proper basics mutually understood between us.
DHCPv6 here refers to the WAN IPv6 mode which you are likely using? Yes? No?

Thanks for your help but I'm going to reinstall device as there is clearly some issue in it regarding DHCP and IPv6. I'll let you know how it goes once reset and reconfigured ;)

Yes, so that means it's between the OPNsense and the ISP, not between OPNsense and your clients.

Well at fist it was between OPNsense and clients as it was still getting an IPv6 class from my ISP. After trying to fix the problem, it doesn't get anymore any IPv6 on WAN :(

Now the question is if your ISP changed this or we ;) You can enable DHCPv6 debug log and see what the "dhcp6c" process offers and how successful it is.

ISP confirmed they changed nothing and I trust them (Init7 in Switzerland). Not sure to understand what you say about DHCPv6 as it's not activated on WAN, it's only activated on LAN although not sure it should be considering that ISP gives me a class of IPv6 for my LAN.

> your firewall can ping IPv6 targets...

Not sure which firewall you are talking about but if I try to ping from Opnsense an IPv6 on Internet I get: No route to host.

Thanks
Vincèn

Hi Franco

Sorry for the late answer and thanks for your message :) Now my router doesn't get anymore an IPv6 from WAN side (it only displays a local one fe80::f690:eaff:fe00:88dd/64) and of course no IPv6 at all on LAN :(
I'm thinking as I did last time I had similar problem reset fully the router.

Thanks

Vincèn

Try to follow this troubleshooting guide and let me know: https://docs.opnsense.org/manual/ipv6.html#basic-setup-and-troubleshooting

Hi Franco

Thanks for the link and I already tried to follow that quide but it's too general and was not helpful at all. All the more my ISP tells me I have to use DHCPv6 with PD but option doesn't exist on WAN port in my OPNsense :(

Vincèn

Hi

Additional info if someone has an idea: my ISP confirmed my router is well working for IPv6 on WAN side so not sure what's wrong on LAN side or if it's due at recent upgrades that have quite modified applications used for DHCP as far as I undersand !

Thanks

Hi

I have a strange issue with my DEC 740 running OPNsense. Since 2 days and after a failure at my ISP, I have lost IPv6 connectivity. I'm running OPNsense 25.7.2.
My ISP supplies an IPv6 and a /64 IPv6. I can see on the WAN side that it gets well the /64 from ISP but nothing at all on LAN side. It doesn't even distribute a local fe... IPv6 address. What should I check to find out why it doesn't work anymore without reason ?

Thanks

Vincèn

Check the WAN overview details first. If you set to only request a prefix you only see a link-local present. The PD can still be given by the ISP and offered to the LANs...

Sorry for the late answer and thanks for your help. As far as I know it gets well the IPv6 class my ISP gives me (tech support confirmed me that my router is getting well the class from their IPv6 DHCP. In lobby of my OPNSense it lists that:
fe80::f690:eaff:fe00:88dd%ax1/64
but on LAN it lists that: 2a02:169:280e:0:5a9c:fcff:fe10:797c/64 which is well the class I got from my ISP. Question is: why it doesn't forward anymore DHCP v6 requests properly from LAN to WAN as it was doing in the past ?

Thanks

Which version do you have? The newest version says it has 2.5gbps ports, that also implies that a previous version only had gigabit ports.

Yeah unhappy it looks to be the "problem". My model is more than 2 years old so probably has only 1G RJ-45 ports :(

Thanks for explananation and I understood now ;) Unhappy on my RJ-45 ports maximum speed OPNsense allows me to select is Gigabit :/ I guess my DEC740 is too old and doesn't support 2.5G on Ethernet ports :/

Hi

No one on this ?

Thanks

Vincèn

The raw device is the one where the properties can be adjusted if they are not syncing at the speed you want.
The other end also needs to cooperate.
But if you have assigned other type of device on top of it, then the options don't appear on them.
For instance if you have VLANs hanging of this device, then those options are not available to the VLAN device, and the parent (the raw device) is often unassigned.
Have you created an assignment for it?

Thanks for your answer but sorry I didn't understand everything. What do you mean by raw device ?
The only modification done is that the Ethernet ports have been bridged together.

Vincèn

Hi

I have a DEC740 that I use since nearly 3 years now with my Init7 fiber 10G connection and it worked great. I have not used it during few months as I was testing an other router.
Now I install it back and do all updates, updating to 24.7.10. Unhappy now the IPv6 is no more working. In Dashboard instead of listing the /48 he should get from ISP it lists a local IP: fe80::200:f7ff:fef7:256
ISP has confirmed that my router requests well an IPv6 class but it doesn't show up in OPNSense and also it doesn't distribute anymore any IPv6 in LAN :(
What should I check or investigate ? It has been a long time I didn't "play" with OPNSense.

Thanks

Vincèn

Hi

I'm using a DEC740 with current OPNSense firmware. I'm using the RJ45 port for the LAN but they don't work at 2.5Gb although specs of devices states they support it.
My desktop computer has a network card that supports 1 and 2.5G.
I have noticed in properties of the port in OPNSense that I can't force it in 2.5G. Is it not supported by OPNsense ? or there is a magic option to get it working also in 2.5G ?

Thankr for your help

Vincèn