On Wed, Mar 31, 2021, 8:08 AM Moritz Kempe <deblist+deb...@moke12g.de> wrote:
> On 3/31/21 1:55 PM, Lee wrote: > > On 3/31/21, Moritz Kempe <deblist+deb...@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. > That's why I suggested checking for DHCP messages in the logs. But also logs upstream from your pi's. Each time you get a DHCP grant, potentially you've switched DNS servers. Note: I haven't changed any networking configuration on this device. I > haven't even enabled wifi. > >
