[Bug 1765765] Re: on nfsboot 18.04 bionic, internet addresses arn't resolve properly

[beta-tester]

i never used ip=dhcp in the boot menu entries.

strange i had those resolv issue with ubuntu 19.04 daily (pending) from 2019-02-14 for sure.
now i tried again with ubuntu 19.04 daily (pending) from 2019-02-20, and now it seems to be not an issue.

i also tried the other versions 18.10 and 18.04.2... there it is no
issue with resolv anymore.

the only thing i could notice now was, that resolving (ping google.de)
takes a bit longer under 19.04 daily than under 18.10 / 18.04.2... or
maybe it is only my mind.

at the moment i can not reproduce my ony reported resolv issue. :/

pxe boot menu entries:
    ########################################
    LABEL ubuntu-daily-x64
        MENU LABEL Ubuntu x64 Daily-Live
        KERNEL http://192.168.0.1/nfs/ubuntu-daily-x64/casper/vmlinuz
        INITRD http://192.168.0.1/nfs/ubuntu-daily-x64/casper/initrd
        APPEND nfsroot=192.168.0.1:/srv/nfs/ubuntu-daily-x64 ro netboot=nfs file=/cdrom/preseed/ubuntu.seed boot=casper -- debian-installer/language=de console-setup/layoutcode=de keyboard-configuration/layoutcode=de keyboard-configuration/variant=German
        TEXT HELP
            Boot to Ubuntu x64 Daily-Live
            User: ubuntu
        ENDTEXT

    ########################################
    LABEL ubuntu-x64
        MENU LABEL Ubuntu x64
        KERNEL http://192.168.0.1/nfs/ubuntu-x64/casper/vmlinuz
        INITRD http://192.168.0.1/nfs/ubuntu-x64/casper/initrd
        APPEND nfsroot=192.168.0.1:/srv/nfs/ubuntu-x64 ro netboot=nfs file=/cdrom/preseed/ubuntu.seed boot=casper systemd.mask=tmp.mount -- debian-installer/language=de console-setup/layoutcode=de keyboard-configuration/layoutcode=de keyboard-configuration/variant=German
        TEXT HELP
            Boot to Ubuntu x64 Live
            User: ubuntu
        ENDTEXT

    ########################################
    LABEL ubuntu-lts-x64
        MENU LABEL Ubuntu LTS x64
        KERNEL http://192.168.0.1/nfs/ubuntu-lts-x64/casper/vmlinuz
        INITRD http://192.168.0.1/nfs/ubuntu-lts-x64/casper/initrd
        APPEND nfsroot=192.168.0.1:/srv/nfs/ubuntu-lts-x64 ro netboot=nfs file=/cdrom/preseed/ubuntu.seed boot=casper systemd.mask=tmp.mount -- debian-installer/language=de console-setup/layoutcode=de keyboard-configuration/layoutcode=de keyboard-configuration/variant=German
        TEXT HELP
            Boot to Ubuntu LTS x64 Live
            User: ubuntu
        ENDTEXT

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https://bugs.launchpad.net/bugs/1765765

Title:
  on nfsboot 18.04 bionic, internet addresses arn't resolve properly

Status in systemd package in Ubuntu:
  Confirmed

Bug description:
  since ubuntu 17.10, 18.04, when i nfsboot into ubuntu live an internet address isn't resolved properly.
  i always have to put a dns server to the /etc/resolv.conf file by hand to get address resolving to work again.

  it wasn't an issue in ubuntu 16.04 and not an issue in ubuntu 17.04.
  it began to be an issue starting with ubuntu 17.10 and ist still an issue now 18.04 daily-live.

  the different between /etc/resolv.conf of ubuntu <=17.04 and utuntu >=17.10 is, that now only one entry is in the resolv.conf file with IP 127.0.0.53
  in the erlier version there was an additional entry on top with the IP of the local DNS server(router).

  when i nfsboot ubuntu 18.04, adjust the /etc/resolv.conf file by hand to get internet address resolving to work,
  when i then install ubuntu 18.04 from that environment to the local harddrive, the networksettings on the newly installed local harddisk is always setted up to "manual" IP in the /etc/network/interfaces - so it will not get a proper IP from the router.
  after a new installation, i always have to set it up "dhcp" to get the IP from the router as usual.

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