Unable to access the internet after update to LMDE 3

[lmint2212]

Hi,

I have been a happy user of LMDE 2 for years, I decided to upgrade to LMDE 3... and now I am unable to access the internet. The computer appears to connect to the same network as before via both WIFI and Cable but with the same result... no Internet access. I can ping servers on the internet via IP addresses but not using their URL... URL ping will result in a name resolution failures, e.g.

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ping www.google.com<br>
ping: www.google.com: Temporary failure in name resolution

Some relevant output from inxi

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System:    Host: p-m46000 Kernel: 4.9.0-11-amd64 x86_64 bits: 64 compiler: gcc v: 6.3.0 Desktop: Cinnamon 4.2.4<br> 
           Distro: LMDE 3 Cindy base: Debian 9.3 stretch 
Network:   Device-1: Intel 82579LM Gigabit Network vendor: Dell Precision M4600 driver: e1000e v: 3.2.6-k port: 8040<br> 
           bus ID: 00:19.0 <br>
           IF: eth0 state: up speed: 100 Mbps duplex: full mac: <filter> <br>
           Device-2: Intel Centrino Ultimate-N 6300 driver: iwlwifi v: kernel port: 7000 bus ID: 03:00.0 <br>
           IF: wlan0 state: down mac: <filter>

ifconfig gives:

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lo        no wireless extensions.

wlan0     IEEE 802.11  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=off   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          
eth0      no wireless extensions.

The Dynamic DNS appears to be setting the DNS correctly, as per the output of nmcli

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nmcli dev show | grep DNS<br>
IP4.DNS[1]:                             192.168.10.1

... so I am super stuck ... any help would be appreciated.

Thx!

[vimes666]

Maybe this is worth a try: https://github.com/linuxmint/lmde-3-cin ... /issues/22

[Fuzzy]

What happens if you temporarily assign static DNS?

Edit /etc/dhcp/dhclient.conf and change this line:

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#prepend domain-name-servers 127.0.0.1;

to

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prepend domain-name-servers ip-of-dns-one, ip-of-dns-two;

(where "ip-of-dns-one" and "ip-of-dns-two" are actual DNS IPs)

Save and restart

Fuzzy