@TP-Link Where is the UK V5 firmware that fixes this issue? 

So far, via DM, your tech support have suggested:

1) I install a version of the firmware that is already on your website, is already installed on my WPA4220, and therefore has the same broken DHCP server behaviour

2) I install a newer version of the firmware but appears to be for a US version of the device. Can you confirm a) This firmware will work on my UK adapter and b) will actually fix the problem?

I have unplugged the device for now as there is seemingly no way to stop it breaking my network at random during the day.

I will be leaving 0 star reviews anywhere I see this product for sale and warning potential purchasers not to buy it due to this issue.

@Solla-topee  Your other forum post is not a "solution" to the issue. The solution is to be able to disable the DHCP server. On my network there are *no* circumstances where I would *ever* want a powerline adapter to be the DHCP server and gateway to the internet. I suspect most other people would be in a similar situation.

There is the issue that the powerline adapter boots quicker than my router on power outage and therefore starts its DHCP server first = lots of restarts of all the devices that have been given bogus IP addresses by the WPA4220. However the biggest issue is that at random during the day, even though my router (with its DHCP server) is switched on and functioning, the powerline starts dishing out IP addresses to devices, which then can no longer access the internet.

I have older WPA4220 hardware that I've been running for years that doesn't have this issue - it's arisen as I foolishly bought 2 new WPA4220 adapters to extend my network with. What a mistake.

You've had a year (or more) to sort this out - what's the matter with you???

@Solla-topee It is definitely a DHCP issue. I can see that when this issue occurs, the affected devices have suddenly decided to use the powerline adapter as the default gateway. This would only happen if the powerline adapter had responded to a DHCP request.

I can't have a device on my network that (at random, or whenever I need to reboot my main router, or if the powerline network itself goes down for any reason) decides to run a DHCP server and give out incorrect information to other devices on my network, so for now the adapter is unplugged.

The V1 WPA4220 adapters that I have on my network do not behave like this - all the adapters are configured with static IPs which should stop any DHCP client/server functionality on the device. You just need to do the same for the V5 hardware.

I have responded to your DM support request and I hope that your engineers will provide a mechanism for disabling this behaviour.

You can see on this forum how much disruption it is causing to your customers.

@Solla-topee many thanks for the explanation, but alas it does not seem that it solves a problem. I have both WPA4220 and WPA7517 and both these are troublesome. WPA4220 runs currently your beta software (from the pinned post in this thread) - but it still occasionally starts its DHCP server and what's worse - the firmware seems to be quite unstable, from time to time entire device becomes unresponsive. The WPA7517 runs stock firmware will with all problems described herein (race condition after power outage is one problem, but more annoying is the situation when powerline connectivity drops momentarily due to some interference in the network - even if this takes couple of seconds "smart" DHCP is started - and restoring sanity to entire network is a hassle). Nb. stock WPA7517 firmware is also not that very stable, regardless of DHCP problems :( So - any possibility of further investigation?

@TP-Link Is there any news on the firmware for the TL-WPA8630P v3 EU beta firmware for this ?
Could you send the link to me if it exists ?

Thanks in advance !

@TP-Link 

I updated to the recommended beta firmware and use the static IP mode. However, the DHCP server is still starting and stopping which can be seen from the log messages.

Configuration:

AVM FRITZ!Box 7590 (Router&ISP modem) -- LAN -- TL-PA4010 EU 3.0 -- Powerline -- TL-WPA4220(EU) Ver. 4.0 (4.0.3 Build 20190419 Rel.41345) -- LAN -- Notebook (Windows 10)

Side Information:
AVM FRITZ!Box 7590 loses DSL synchronization on an irregular time basis. The logs report that the loss of the synchronization was probably caused by Powerline Adapters.

Since I am working from Home Office I would be very glad for any help to permanently solve this issue. An option to manually turn off DHCP / smartDHCP functionality completely and permanently would already be fine!