Wired internet gets dropped regularly

[Simon991]

I've noticed recently that wired networking at the Sky hub gets dropped, first started about 2- weeks ago. Rebooting the hub fixes it, but it's happening more often. Wireless connection to hub still works when this happens.

I have checked the networking after it's failed and first time I noticed that the address range being used had changed from 192.168.1.x to 192.168.0.x for the wired connections. I switched off IPV6 DHCP first to see if that helped, it did not.

After a few more occurences I thought I'd just move the network to the zero prefix so the change shouldn't effect the routing if it changed, but to no avail - still loses connectivity even though the addresses show in the same range still.

Other things I have tried:

* Check the firmware updates at router are latest

* Moving the wire to a different one of the 4 ports on the router

* Disconnect other wires so only one known-good one is connected

Any other suggestions?

Thanks

[TimmyBGood · Accepted solution]

@Simon991 

Do you have any other device which may be acting as a DHCP server?

[jamesn123]

@Simon991 

Suggests you have some sort of 3rd party booster/extender/router giving out IPs

[Simon991]

Thanks, there's another wifi box which is capable of DHCP'ing (but it's switched off) so I'll check if that is behaving next time I have the issue.

[TimmyBGood]

@jamesn123 @Simon991 

I recently put in a cheap-as-anything TP-Link wireless access point as a replacement for an apparently identical but much older one (same model number) and discovered that, contrary to all common sense, the current hardware revision has an active DHCP server by default...

[Simon991]

So I stripped out a lot of the extra connections and have been running for four days with no drop now. I suspect the cheap wifi point was going back to some basic setting including DHCP as that's currently disconnected.

Thanks for the assistance, for now the problem is solved.

Cheers