In message , druck 
writes
>On 10/05/2019 15:20, Adrian wrote:
>> I've just changed my router, but the new one has been setup with the
>>same IP address (192.168.1.254).
>>  I've also got 6 PIs on my network.  Of those, 2 seem OK, but the
>>other four have decided that their default gateway is now going to be
>>192.168.1.1.
>
>The router is probably still advertising 192.168.1.1 as the default
>gateway via DHCP. Make sure it doesn't have a separate setting for the
>default gateway, as some will allow it to be different from their own
>address. Then reboot the router, and any Pis with the wrong gateway (or
>use dhclient to get a new lease).
>

A bit more digging in the router, and indeed, it is possible to have a
gateway IP address that is different to the router IP address.  I've
changed the gateway IP address from 1.1 to 1.254 and rebooted.  Time
will tell what that does.  A quick test with my phone suggests that it
is working.

Thanks

Adrian
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