o1bigtenor via Dng <dng@???> wrote:

>>>
>>> A quick search came up with https://unix.stackexchange.com/questions/8160/how-to-clear-dns-cache-on-dd-wrt
>>> The bit that seems appropriate for your needs would be :
>>> Since there are no init scripts on DD-WRT, I guess this would be the easiest way to restart dnsmasq:
>>>
>>>> • Kill dnsmasq:
>>>> root@ddwrt6:~# killall dnsmasq
>>>>
>>>> • Start dnsmasq:
>>>> root@ddwrt6:~# dnsmasq --conf-file=/tmp/dnsmasq.conf
>>>
>>>
>>> Or there’s this page https://www.freesoftwareservers.com/display/FREES/Restart+DNSMasq+DD-WRT+Command+Line
>>>> killall dnsmasq
>>>> dnsmasq --conf-file=/tmp/dnsmasq.conf
>>>
>
>
> Hmmmmmmm - - - that would work well if the issue were on the router -
> - - except it wasn't.
>
> It was my main system where I could not connect through.
> I could connect to the router, I could ping the router, the radio
> (past the router and I could
> ping 8.8.8.8 but I could NOT ping mz googly.
> I could also not use the browsers on my system - - - they would hang
> with an address unavailable.
>
> (That's what was so frustrating about this - - - - the wife could use
> her stupid phone to connect
> out, I could not use my main system. Would really like to find out
> what I would have to do a 'restart'
> on to have gotten things running.)

OK, lets take a step back.

Your wife’s phone may well be using different settings. You’d need to find out what resolver it’s using, and more importantly, whether the browser is bypassing DNS altogether by using DoH (DNS over HTTPS). If the latter, then your local DNS being down would not stop it working.

Also check what your system has in it’s resolv.conf during normal operations. I’m assuming it isn’t since it DD-WRT, but I know a lot of ISp supplied junk gives out the ISPs DNS resolvers in DHCP messages - so if things change then they might stop working.

So, it may well be on the router, but your wife’s phone is bypassing that. You need to identify how things are working when “normal”, that’ll make it easier to work out what is not normal when things aren’t working.


Simon