Yup, really sucks so I've signed up for Plusnet today

I've just noticed the same issue coming back from holiday.

CGNAT is annoying - I'd probably pay the £3 if needed -- but if they can't offer it... grrr!

Even more frustrating is:
- my ipv6 prefix has changed. It was a fixed /48, now it's a 56. I can deal with this, but *is it fixed or not*. ?
- my 1st hop latency has gone up by ~3ms. How much of this is the cgnat change? I'm guessing just a smaller part, and that there are bigger network changes made too (location: hove/brighton)

Giganet still offer a good price, and nothing is actually broken for me, but it's annoying. Have emailed them and starting to consider other ISPs.

Any local experience on latency welcome since as we know it is SO variable. Aquiss, perhaps zen come to mind.

I should add that I wasn't impressed by the lack of communication from them. (unless I missed it?)

In reply to a post by planetf1:

I've just noticed the same issue coming back from holiday.

CGNAT is annoying - I'd probably pay the £3 if needed -- but if they can't offer it... grrr!

Even more frustrating is:
- my ipv6 prefix has changed. It was a fixed /48, now it's a 56. I can deal with this, but *is it fixed or not*. ?
- my 1st hop latency has gone up by ~3ms. How much of this is the cgnat change? I'm guessing just a smaller part, and that there are bigger network changes made too (location: hove/brighton)

Giganet still offer a good price, and nothing is actually broken for me, but it's annoying. Have emailed them and starting to consider other ISPs.

Any local experience on latency welcome since as we know it is SO variable. Aquiss, perhaps zen come to mind.

With the switch to CGNAT I didn't notice any effect on latency and speedtests that previously topped out at just under 150Mb were reporting 157Mb or thereabouts so had my dynamic DNS host name stopped working I probably wouldn't have noticed or cared. Nothing was communicated to me prior to the switch so you're not alone in that regard. I doubt emailing them will achieve anything, they're not going to take you off CGNAT and won't offer a static IP so your choices are lump it or go elsewhere. I'm going to Plusnet, by all accounts the service is decent and the price is good (£30 for 300Mb) so twice the speed I was getting at Giganet for a couple of pounds less a month. I'd have preferred to go to an Idnet, Aquiss or Zen but you're not getting any of them for the £32 I was paying Giganet. I'll also get £35 for signing up through topcashback.
Other than to DDNS not working, the account portal at order.giganet.uk isn't updating and for me still shows the old IP address but as offline.

Edited by sjr (Mon 05-Aug-24 13:14:38)

Plusnet went live on Monday. I woke up to green lights on the ONT but red on the router and trying to re-connect with the Plusnet credentials gave a failed to authenticate error. A quick call to Plusnet and they told me that their systems showed that Openreach had done their part of the work but they had failed to notify Plusnet in order for them to activate my account. That was done instantly while on the phone and the lights on the router turned green. But other than that it was a smooth transition and I'm up and running with the DGA4134 router that was supplied by Giganet. Other than changing the credentials in the router, the only change was to disable IPv6 because Plusnet is IPv4 only as far as I can tell. Only two days in to Plusnet but so far it has been good and all my woes with dynamic DNS host names are solved.