I can't remember, as there have been so many posts since my last one, however, the way around the external IP address changing is to use a DDNS provider, are you doing this & if so have you proved with something like a DIG tool that it is actually working?
I am not employed by TalkTalk, I'm just a customer. If my post has fixed the issue, please mark it as the Best Answer.
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digitalham, thanks for your comments. Yes I'm aware of AnyDesk, TeamViewer and the like. I shouldn't have to use a third party to get around the deficiencies in the Talk Talk Router. I have a BT hub here, which, like the Talk Talk router, is also Sagecom hardware, and it works perfectly with an identical VPN working in the opposite direction.
Keith, thanks for your comment. Yes I'm using the Dynu.com DDNS server. I have two VPN servers, one here and one at my daughters house. They are identical and both use DDclient to keep the Dynu.com DDNS up to date. The connection from here to my daughters fails every time her external IP address changes, the connection from my daughters to here has never yet failed. The only difference is the ISP and router, I have a BT hub, she has a Talk Talk router. Both use Sagecom hardware with custom firmware. The BT hub is 100% reliable, as is the admin interface, the Talk Talk router has (had) a multitude of problems and the admin interface appears to be unreliable. The comparison between the two essentially identical network paths is difficult to ignore !!
The failure I'm seeing following an external IP address change is a little odd. When I checked my Dynu.com account this morning it showed the external IP address had changed at 02:48:58 this morning, I assume CA time where Dynu.com are based, ~10:48 GMT. At the time I checked the account I still had access to the VPN, even though Dynu.com showed the external IP address had already changed. Now, ~5:00pm GMT, I've lost access again. I'm not sure of the exact timing, but it looks as if loss of access to the VPN doesn't happen as soon as the external IP address changes, but a short time afterwards. The only way to restore access to the VPN is to reset the TT router again 😞
Are there any log files stored in the router that may shed some light on this problem ?
Just as a matter of interest, we're seeing ~15Mbps download and ~0.9Mbs upload speeds at present. Do any of your broadband packages have less of a discrepancy between download and upload speeds ? I realise ADSL is Asynchronous DSL, but at present the 0.9Mbps upload speed is causing me some major problems using the VPN 😞
Apologies, I don't have any further information at the moment.
As soon as I receive additional information from our Products Team then I will post back on this thread.