Community Fibre IPv6 ( or lack of it )

Had CF installed two weeks ago and the speed is great, had no problems apart from the fact that I have no IPv6. I have sent multiple message and requests via thier online help and twitter, even spoken to a couiple of 'support' people. So far all they have offered is to ask me to reboot the Velop and check its settings. It's not the Velop as I've tried using my own router and looked at the traffic with Wireshark, there's no response to router solcitation or DHCP6 requests from the Velop or Opnsense ( even tried a pfSense instance ). Has anyone else had issues with them in the same vein and is there a representative on this forum who can assist? I'm using an HE tunnel at present for IPv6 but that results in my wife complaining that Google thinks we are in New York, but it at least allows my to connect to some crtical IPv6 only servers I use for work.

Hey,

I had the exact same issues when using my own router.
You need to phone them and ask them to clear the MAC Addresses for IPv4 and IPv6 from their cache due to its got stuck and then you need to have your router reconnect and that should be it, in fact I was on the phone and the Tech Guy knew exactly what the issue was and they cleared it while on the phone.
What they will do is drop your current router's connection on both IPv4 and IPv6 and then your router should then just connect up.

For IPv6 I just have my router request for a Prefix.

Here is a BQM via IPv6, its not that pretty but its working fine here.

Also have you tried connecting your PC to their Modem instead of using any router, how did that work ?

Either way I think its due to sticky / stuck MAC's that needs to be cleared.

Paul

Worth bearing in mind that for whatever reason if you have a static IPv4 with Community Fibre they can't give you IPv6 at all. Not sure how they manged to create this situation but something to remember.

Edited by jpm (Wed 27-Oct-21 11:39:09)

In reply to a post by jpm:

Worth bearing in mind that for whatever reason if you have a static IPv4 with Community Fibre they can't give you IPv6 at all. Not sure how they manged to create this situation but something to remember.

They don't give out Static IP's especially for home customers, but the IPv4 addresses are very sticky, I had to do a factory reset after doing a firmware upgrade and my connection was down for about an hour and when it all came back up I had the exact same IPv4 Address.

Paul

You must have got through to someone who understood. As far as I can tell that person must have left!

Pretty sad then. I still have my Zen VDSL, as yet I've not set a cancel date. That has a static /29 IPv4 and IPv6 has a /48 PD plus a /64 on the WAN,all working perfectly. Pitty I cannot get Zen to partner with CF, that WOULD be something hard to beat.

Still no phone call or email...

Edited by marjohn56 (Wed 27-Oct-21 17:50:21)

I think there's more of a problem than that. Wireshark shows no response to RS or DHCP6 solicits, seems like there's just no IPv6 on the cct at all.

In reply to a post by marjohn56:

Pretty sad then. I still have my Zen VDSL, as yet I've not set a cancel date. That has a static /29 IPv4 and IPv6 has a /48 PD plus a /64 on the WAN,all working perfectly. Pitty I cannot get Zen to partner with CF, that WOULD be something hard to beat.

Still no phone call or email...

Well I have never got emails from them apart from the ones containing the invoice.

I have never had any issues getting them to phone me, I contacted them via Twitter over a DM and they have always got back to me stating somebody will phone and they have.

Paul

In reply to a post by marjohn56:

I think there's more of a problem than that. Wireshark shows no response to RS or DHCP6 solicits, seems like there's just no IPv6 on the cct at all.

It won't respond, that's what I was trying to tell you, you need to get them to clear the MAC Addresses for IPv4 and IPv6, their DHCPv4 and DHCPv6 Services are expecting certain MAC Addresses, they will ignore your requests if they do not match.

Mine just sat there waiting and waiting before they cleared the current MAC from their Cache, then and only then was when I got a response.

Paul

Pleased to say that it died completely. I rang and spoke to Luke, who sorted it, he re-provisioned it and now I also have ipv6, this is with the Velop.

I just want to check I only need to spoof the MAC and not the DUID as well?

will have another go with my one of OpnSense instances over the weekend.

Glad its now resolved.

Paul

Just as a side note to close this ( maybe, maybe not ). I run Opnsense with a few VLANs etc. I tought I'd try a Microtik, as that was what was in your Tagline. Bit of a learning curve, but got it all up and running, VLANs all appeared good etc, then I found that Microtek dhcpdv6 only supports prefix delegation, so SLAAC only on the LAN(s).... no good for my network, So it was back to Opnsense.
To anyone reading this and thinking of using Opnsense, it works well, but it's imperitive that you keep the WAN disconnected until you have checked the 'Prevent Release' option for dhcp6c, otherwise you'll cycle through a whole bunch of leases before long and that might have been what caused the IPv6 problem I had originally.. who knows. What I do know is that I have a new Microtik RB4011 heading for Ebay shortly.

In reply to a post by marjohn56:

Just as a side note to close this ( maybe, maybe not ). I run Opnsense with a few VLANs etc. I tought I'd try a Microtik, as that was what was in your Tagline. Bit of a learning curve, but got it all up and running, VLANs all appeared good etc, then I found that Microtek dhcpdv6 only supports prefix delegation, so SLAAC only on the LAN(s).... no good for my network, So it was back to Opnsense.
To anyone reading this and thinking of using Opnsense, it works well, but it's imperitive that you keep the WAN disconnected until you have checked the 'Prevent Release' option for dhcp6c, otherwise you'll cycle through a whole bunch of leases before long and that might have been what caused the IPv6 problem I had originally.. who knows. What I do know is that I have a new Microtik RB4011 heading for Ebay shortly.

I did say in my other post it had issues getting an IPv6 Address, but it does work.

Yeah it was a huge learning curve, you referring to DHCPv6 Client or Server, Client works fine, however Server has issues.

I basically have the DHCPv6 Client in my router request for a Prefix from my ISP (currently a Dynamic Address) and then have the router setup its own IPv6 Address from that and then use Neighbor Discovery (ND) to get IPv6 Addresses for all our devices which works fine for us.

The link below says my connection type is a Native IPv6 one, it says its ICMP Reachable, connecting via IPv6 is also working for me.
https://ipv6-test.com/

Paul

That's the sad thing, the dhcpv6 client on the Mikrotk is very good, correctly doing a rebind check on a reboot, it remembers the address it had and tries after a power up to see if it can have the same address again, which is grade 1. The FreeBSD client in the *senses does not, and immediately requests a prefix, only using rebind if a renew times out. As I said the way around that is never to allow a release, and that works fine.

The dhcpdv6 in Mikrotek as sadly lacking which is a great shame, as it's a cool unit and I would really have liked to keep it. As I run a file server and small mail server I can use DDNS to get around the prefix rhat might change, but I need to have static V6 suffixes at least in the LAN(s) and I have to let dhcpdv6 handle that.

This is true, I did recall reading that the DHCPv6 isn't complete as yet which is why its disabled by default, maybe over time they will finish it off.

Paul

Maybe around the same time they get around to finishing RoS 7

In reply to a post by Pheasant:

Maybe around the same time they get around to finishing RoS 7

Yeah 🤣 that has been going on for a while now 😂🤣

But yeah one can hope, but I can say this router is the best that I have ever had and hardware / throughput wise will be used for many years to come.

Paul

Ah this explains why I can't get it to work with mine.

In reply to a post by jpm:

Worth bearing in mind that for whatever reason if you have a static IPv4 with Community Fibre they can't give you IPv6 at all. Not sure how they manged to create this situation but something to remember.

In reply to a post by roundrobin:

Ah this explains why I can't get it to work with mine.

In reply to a post by jpm:

Worth bearing in mind that for whatever reason if you have a static IPv4 with Community Fibre they can't give you IPv6 at all. Not sure how they manged to create this situation but something to remember.

Community Fibre don't provide Static IPv4 Addresses, but they are Sticky as in they stay a very long time, I have turned off my Router for an hour while I installed a new cable and I was given the same IP, I have had my Public IPv4 Address for almost a year.

Also IPv6 works fine for me for ages, if the routers (as in 3rd party) DHCP Client for IPv4 or IPv6 are failing to respond, just phone them up and ask for them to clear / remove the MAC's that its stuck on.

Community Fibre doesn't use PPPoE they use DHCP for both IPv4 and IPv6.

Paul

You do realise you just quoted an 8 month old post with an identical response that you gave 8 months ago. 😂

https://forums.thinkbroadband.com/fibre/t/4698001-co...

Edit: ok so the repetition seems worth it as the other person obviously glossed right over your previous reply.

The forum should really default to flat mode.

Edited by j0hn83 (Tue 10-May-22 12:36:18)

In reply to a post by j0hn83:

You do realise you just quoted an 8 month old post with an identical response that you gave 8 months ago. 😂

https://forums.thinkbroadband.com/fibre/t/4698001-co...

Edit: ok so the repetition seems worth it as the other person obviously glossed right over your previous reply.

The forum should really default to flat mode.

OMG, you had me checking the date then LOL
But yeah, I agree.

Paul

Community Fibre don't provide Static IPv4 Addresses, but they are Sticky as in they stay a very long time, I have turned off my Router for an hour while I installed a new cable and I was given the same IP, I have had my Public IPv4 Address for almost a year.

Also IPv6 works fine for me for ages, if the routers (as in 3rd party) DHCP Client for IPv4 or IPv6 are failing to respond, just phone them up and ask for them to clear / remove the MAC's that its stuck on.

Community Fibre doesn't use PPPoE they use DHCP for both IPv4 and IPv6.

Paul

Thanks for your explanation. I thought that because of CGNAT residential connections are given a private (RFC 1918) IP address for the WAN which then has to be further natted for the LAN devices thus giving double-NAT connectivity to the wider internet community.

I don't have a CF service yet, but I'm interested in this because I currently use a VOIP service via a Gigaset base station and I'm unsure if that will continue to work over a double-natted connection.

Renfrew

In reply to a post by Renfrew:

I don't have a CF service yet, but I'm interested in this because I currently use a VOIP service via a Gigaset base station and I'm unsure if that will continue to work over a double-natted connection.

Shouldn't present a problem. Your could check with a soft phone app using a mobile connection (that is CGNAT)

In reply to a post by Renfrew:

Community Fibre don't provide Static IPv4 Addresses, but they are Sticky as in they stay a very long time, I have turned off my Router for an hour while I installed a new cable and I was given the same IP, I have had my Public IPv4 Address for almost a year.

Also IPv6 works fine for me for ages, if the routers (as in 3rd party) DHCP Client for IPv4 or IPv6 are failing to respond, just phone them up and ask for them to clear / remove the MAC's that its stuck on.

Community Fibre doesn't use PPPoE they use DHCP for both IPv4 and IPv6.

Paul

Thanks for your explanation. I thought that because of CGNAT residential connections are given a private (RFC 1918) IP address for the WAN which then has to be further natted for the LAN devices thus giving double-NAT connectivity to the wider internet community.

I don't have a CF service yet, but I'm interested in this because I currently use a VOIP service via a Gigaset base station and I'm unsure if that will continue to work over a double-natted connection.

Renfrew

I am not on CGNAT, I have my own Public IPv4 and IPv6 Addresses assigned to me, I requested for my own Public IP Addresses when signing up due to I run services here and CGNAT would break that.

Community Fibre was happy to give me my own Public IP Address, while they are dynamic, they are very sticky which is why I have had this IP for several months and probably will for another several months, I can however release that current IP and get a different one.

When or if you jump over to Community Fibre, do some research before hand, look through their FAQ, I got (over the phone) a very good price deal at the time with other extras, I also asked not to be put on CGNAT due to I run Servers here hence why I wanted a faster upload, like I said they was happy to provide everything I asked for, I might of been able to ask for more stuff, but I was happy with what I was provided and currently getting.

Just a heads up, there is no Online Portal like other ISP, you get an email the start of each month with the monthly bill and invoices etc, they are very polite on the phone when you have to phone for support.

Not played with VoIP yet so wouldn't know, I am sure people on here may know the answer.

Paul