Re: DNS problems on Raspberry Pi 400 (Debian 10.9)

[Moritz Kempe <deblist+debian@moke12g.de>]

On 3/31/21 1:55 PM, Lee wrote:
> On 3/31/21, Moritz Kempe <deblist+debian@moke12g.de> wrote:
> > On 3/31/21 1:25 PM, Greg Wooledge wrote:
> > > On Wed, Mar 31, 2021 at 12:14:59AM +0200, Moritz Kempe wrote:
> > > > -- Firefox Hmm. We’re having trouble finding that site. We can’t
> > > > connect to the server at github.com.
> > > > -- Chromium This site can’t be reachedCheck if there is a typo in
> > > > github.com. DNS_PROBE_FINISHED_NXDOMAIN
> > > > moke@rpi4-20201112:~$ host github.com Host github.com not found:
> > > > 2(SERVFAIL)
> > > grep ^hosts: /etc/nsswitch.conf
> > --
> > hosts:          files mdns4_minimal [NOTFOUND=return] dns mymachines
> I don't trust multicast dns, so in addition to turning it off I've also got
> $ grep host /etc/nsswitch.conf
> # hosts:          files mdns4_minimal [NOTFOUND=return] dns
> hosts:          files dns
>
> Maybe worth a shot?

Changed my /etc/nsswitch.conf to

--

..

#hosts:          files mdns4_minimal [NOTFOUND=return] dns mymachines
hosts:          files dns
..

--

and rebooted the system. The behavior hasn't changed.

github.com is still blocked. And dig is still able to find the ip address.

Or do i have done something wrong?


I have found out, that i can restore some domains when running 
"/sbin/dhclient" as root but not all. Github is still not accessible.


Note: I haven't changed any networking configuration on this device. I 
haven't even enabled wifi.