Why is /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf wrong?











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Yesterday i updated Ubuntu 18.10, but after poweroff/poweron the DNS was wrong, so that routing worked, e. g. ping 8.8.8.8, but not name resolving.
So i overwrote the resolving files, e. g. /etc/resolv.conf, but that was not enough. I also had to overwrite /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf, because the file had



DNS=192.168.0.1



which ist wrong because that is the default gateway, not a DNS server!
Today, and without rebooting, the problem was back again; the process, dhclient -1 eno1, wrote the wrong value for the DNS server into /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf !
So as a workaround i am using: 



# Workaround for the Bug that DHCP (dhclient -1 eno1) tries to use the Default-GW as a DNS server, under Ubuntu 18.10 and since 2018-11-18:

cp /root/bin/isc-dhcp-v4-eno1.conf /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf

systemctl restart systemd-resolved.service


in a Bash script which is called every half hour via /etc/crontab.
Is the a better solution for this Bug?



With Windows 8.1 the name resolving still works without problems.






dns dhclient







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    down vote

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    Yesterday i updated Ubuntu 18.10, but after poweroff/poweron the DNS was wrong, so that routing worked, e. g. ping 8.8.8.8, but not name resolving.
    So i overwrote the resolving files, e. g. /etc/resolv.conf, but that was not enough. I also had to overwrite /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf, because the file had



    DNS=192.168.0.1



    which ist wrong because that is the default gateway, not a DNS server!
    Today, and without rebooting, the problem was back again; the process, dhclient -1 eno1, wrote the wrong value for the DNS server into /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf !
    So as a workaround i am using: 



    # Workaround for the Bug that DHCP (dhclient -1 eno1) tries to use the Default-GW as a DNS server, under Ubuntu 18.10 and since 2018-11-18:
    
cp /root/bin/isc-dhcp-v4-eno1.conf /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf
    
systemctl restart systemd-resolved.service


    in a Bash script which is called every half hour via /etc/crontab.
    Is the a better solution for this Bug?



    With Windows 8.1 the name resolving still works without problems.






    dns dhclient







    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      Yesterday i updated Ubuntu 18.10, but after poweroff/poweron the DNS was wrong, so that routing worked, e. g. ping 8.8.8.8, but not name resolving.
      So i overwrote the resolving files, e. g. /etc/resolv.conf, but that was not enough. I also had to overwrite /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf, because the file had



      DNS=192.168.0.1



      which ist wrong because that is the default gateway, not a DNS server!
      Today, and without rebooting, the problem was back again; the process, dhclient -1 eno1, wrote the wrong value for the DNS server into /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf !
      So as a workaround i am using: 



      # Workaround for the Bug that DHCP (dhclient -1 eno1) tries to use the Default-GW as a DNS server, under Ubuntu 18.10 and since 2018-11-18:
      
cp /root/bin/isc-dhcp-v4-eno1.conf /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf
      
systemctl restart systemd-resolved.service


      in a Bash script which is called every half hour via /etc/crontab.
      Is the a better solution for this Bug?



      With Windows 8.1 the name resolving still works without problems.






      dns dhclient







      share|improve this question













      Yesterday i updated Ubuntu 18.10, but after poweroff/poweron the DNS was wrong, so that routing worked, e. g. ping 8.8.8.8, but not name resolving.
      So i overwrote the resolving files, e. g. /etc/resolv.conf, but that was not enough. I also had to overwrite /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf, because the file had



      DNS=192.168.0.1



      which ist wrong because that is the default gateway, not a DNS server!
      Today, and without rebooting, the problem was back again; the process, dhclient -1 eno1, wrote the wrong value for the DNS server into /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf !
      So as a workaround i am using: 



      # Workaround for the Bug that DHCP (dhclient -1 eno1) tries to use the Default-GW as a DNS server, under Ubuntu 18.10 and since 2018-11-18:
      
cp /root/bin/isc-dhcp-v4-eno1.conf /run/systemd/resolved.conf.d/isc-dhcp-v4-eno1.conf
      
systemctl restart systemd-resolved.service


      in a Bash script which is called every half hour via /etc/crontab.
      Is the a better solution for this Bug?



      With Windows 8.1 the name resolving still works without problems.






      dns dhclient




      dns dhclient






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 19 at 17:14









      Rolf

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