BT IP address

For those of you on a BT residential service, how often does your dynamic IP address change, assuming you reboot your router every now & again? Just wondering if its a 'sticky' IP address or if it changes everytime the router is rebooted.
Cheers.

Well if I turn off my 3rd party router for say 5 to 10 mins then turn it back on there are very good chances I will be assigned a different IP, but there has been times I got the same IP.

As for rebooting it every now and then, why would you reboot your router, the only time I reboot my router is when I change settings or update the firmware that require a reboot, other than that I just leave it alone.

I have had an IP last from 1 to +3 months if I leave it.

Paul

Yes, the IPv4 address changes on virtually every restart of the PPP session.

The IPv6 prefix delegation is fairly sticky and quite often comes back with the same value.

Thanks. Router will only need to be rebooted if i update firmware or if i get a power cut. I think i will create a Netgear DDNS or no-ip account & setup this in my Netgear router, so i can point certain apps/services such as vipdnsclub to this domain rather than having to re-register my new IP address everytime.

In reply to a post by gc1:

Yes, the IPv4 address changes on virtually every restart of the PPP session.

In most cases yes, but I have had a few times where I have been given the same IP, or one of the ones I have had previously.

In reply to a post by gc1:

The IPv6 prefix delegation is fairly sticky and quite often comes back with the same value.

Well my routers DHCPv6 Client says its IPv6 Prefix will expire after a year, now not sure if this is true, but when you do a IPv6 Lookup it often comes back as stating its a Static IP.
Now if this is true or not I cannot say.

Paul

In reply to a post by Highland76:

Thanks. Router will only need to be rebooted if i update firmware or if i get a power cut.

Just limit the amount of reboots / reconnects and you should be fine.

In reply to a post by Highland76:

I think i will create a Netgear DDNS or no-ip account & setup this in my Netgear router, so i can point certain apps/services such as vipdnsclub to this domain rather than having to re-register my new IP address everytime.

I set my own DDNS up on our rack server, its a bit crud at what it does, which it every 5 mins it pings a page (with credentials) on the server and if the IP is different it updates the DNS Record and in less than 60 seconds the new IP is live.

Sadly since I moved over to this new router and also where I no longer using Linux Box here to do all the DDNS Calls I have been updating by hand the changes.

I will later on since I have this new router which can run custom scripts when an event is triggered (i.e. a WAN IP change) so I should be able to call my ddns page only when the WAN IP has actually changed and not every 300 seconds (5 mins) like I am doing currently.

I just need to read up on how to do this.

Paul

I have the impression that my BT HH6 reboots itself every fortnight or so, but it's only my impression from an occasional look at the stats. I certainly don't turn it off except when deep cleaning our home office, and that (blush) doesn't happen very often.

In reply to a post by Malwaremike:

I have the impression that my BT HH6 reboots itself every fortnight or so

That's a well known "feature" of BT routers.

Find mine reboots every 14 days and 10 minutes of up time (smart hub 6A). Get a new IP address each time.

Have also found that some sites that return your IP address report 212.127.1.76 rather than the IP address reported by your router.

When I use to use my Smart Hub, I had it last a month or two before it rebooted but I have also had it reboot after 2 weeks too.
So I think the router does tests and thinks it needs to reboot.

Not sure how the new Smart Hub 2 works like.

Paul

I've had 60+ days from a Smart Hub 2 before it rebooted for a firmware update

In reply to a post by jpm:

I've had 60+ days from a Smart Hub 2 before it rebooted for a firmware update

Yeah, its good to know the Smart Hub 2 also has a long uptime before reboots.

Paul

And if you use a third party router.... My Billion 8800 is currently 560 days since last boot and 100 days since last re-sync.
I have not kept track of my IP address, I assume the IPv4 one has not changed in that 100 days. My public IPv6 address for this computer changes daily, that is what Windows does by default.

In reply to a post by dsergeant:

And if you use a third party router.... My Billion 8800 is currently 560 days since last boot and 100 days since last re-sync.

Agreed, my Linksys Router that I had used since 2016 to when I got Full Fibre 900 only rebooted after a firmware upgrade or if I changed a setting that needed to be rebooted, but 100 days does seem about right.

In reply to a post by dsergeant:

I have not kept track of my IP address, I assume the IPv4 one has not changed in that 100 days. My public IPv6 address for this computer changes daily, that is what Windows does by default.

I think that's a part of the Windows Privacy / Security thing which is enabled by default.

You will see at least 2 Preferred IPv6 Addresses listed (IPv6 Address and Temporary IPv6 Address) which will have the same Prefix, but its the Temp one which is the public one.

Paul

My Billion 7800 also ran very long periods between reboots until about 800 days when the wifi card expired in a puff of smoke, a common problem according to the forums. The warranty lasts 730 days and does NOT reset, £80 down the drain ... since then ISP routers have met my limited requirements just fine

dsergeant

If your router hasn't rebooted in 560 days it may well have security issues as it has had no updated software/firmware for 18 months.

The ISP supplied ones usually reboot as they are having regular updates / patches.

In reply to a post by kitcat:

The ISP supplied ones usually reboot as they are having regular updates / patches.

Not especially regular, the Plusnet Hub One hasn't had new firmware for well over a year now.

In reply to a post by kitcat:

The ISP supplied ones usually reboot as they are having regular updates / patches.

This is partly true, BT Hubs reboot when they become sluggish and unstable, my old Home Hub was rebooting on a 7 to 14 day basis, Smart Hub was about 2 to 4 weeks, or when we used the connection a lot like downloading a huge game.

BT never fixes issues in their routers that they are not aware of sadly there is no contact details to report bugs and issues, I reported them over the phone, via Twitter, yet they never got resolved, which was also a reason I refuse to use BT Routers.

Paul

In reply to a post by kitcat:

dsergeant

If your router hasn't rebooted in 560 days it may well have security issues as it has had no updated software/firmware for 18 months.

The ISP supplied ones usually reboot as they are having regular updates / patches.

Firmware is done manually when I do it. It has the latest firmware from the Billion site that I installed around the last boot. But you don't necessarily have to update, they raise updates for all sorts of reasons, often due to a customer reported problem that is then fixed but doesn't apply to you. Relative rare updates is a good sign that the design is stable.

I gave up on the Smart Hub when I was on BT for very similar reasons to yours.

It started interrupting my usage randomly rebooting to update firmware every 14 days without fail.

There was no trend to the time.

In the end I went and got a separate modem and router and the connection was rock solid - like it is now on EE.

Well on my old Smart Hub I only had if I recall 2 or 3 firmware updates while I was using it, but I was getting loads of reboots at the time, so these were not firmware reboots, but more due to stability issues with the hub.

BT even sent a replacement at one point an that did the same after a little while, so I brought my own 3rd party router and used that, and put the smart hub back in its box for when I need it for BT tests.

I just got fed up when it use to just drop connection no matter what the time, dropping all the connections I had open while working on code etc.

At one point we had the Smart Hub reboot 4 times within 20 mins, so defo not a firmware update forcing a reboot.

Well for our connection I can only go the router route LOL

Paul