On Thu, 2017-10-12 at 07:08 +0800, Ed Greshko wrote:
> On 10/12/17 06:08, Patrick O'Callaghan wrote:
> > I know what DDNS is. That's not what I'm talking about. I'm not using
> > DDNS at present though I have done in the past. The router has a
> > control panel for configuring *its own* DNS resolver, i.e. where it
> > forwards queries to upstream. It was set to "dynamic", which I
> > interpret to mean "get the configuration from the ISP". (The broadband
> > connection is PPPoE so it presumably behaves like an Ethernet).
> > Changing it to explicitly point at Google is what had the desired
> > effect. It now seems likely that the kernel version was mere
> > coincidence, at least I hope so.
> 
> It was 05:45 and still dark out.  Forgot who I was talking with.  Sorry about 
> that.
No worries. Hope I didn't sound snappy, which wasn't my intention.

> > > So, in your configuration it sounds like your Fedora system is getting 
> > > all the
> > > network configuration from your router.  So, if you look in 
> > > /etc/resolv.conf you see
> > > the IP address of your router?  Yes?
> > 
> > Correct.
> > 
> > > > I don't see how a change of kernel could have affected this, unless
> > > > there's some subtlety in uPnP (or DHCP), but we'll see.
> > > > 
> > > > 
> > > 
> > > I don't think you're seeing any kernel issues.
> > 
> > As I say, that may well be the case (I hope it is). The router config
> > change seems to have corrected the problem for now.
> 
> 
> Would have been nice know what resolver the router was using when set to 
> Dynamic.....

Probably the ISPs own server, but there's no easy way to know and by
this time they've probably corrected any problem they may have had.

poc
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