[Bug 1848018] Re: [solved] PXE boot/nfsboot broken; Eoan Ermine; 19.10

[Robin]

I also had this problem and indeed, the solution was ip=dhcp. Thank you
very much!

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Title:
  [solved] PXE boot/nfsboot broken; Eoan Ermine;  19.10

Status in casper package in Ubuntu:
  Invalid

Bug description:
  hello,

  since ubuntu 19.10 Eoan Ermine (beta & daily) PXE boot/nfsboot is broken from:
  http://releases.ubuntu.com/eoan/ubuntu-19.10-beta-desktop-amd64.iso
  and
  http://cdimage.ubuntu.com/daily-live/pending/eoan-desktop-amd64.iso

  when i use the same boot options as of ubuntu 19.04 (or 18.04 LTS), where it was working, i will get am error message now:
  "
  ...
  Begin: Loading essential drivers ... done.
  Begin: Running /scripts/init-premount ... done.
  Begin: Mounting root file system ... Begin: Runnint /scripts/nfs-top ... done.
  Begin: Running /scripts/nfs-premount ... done.
  [...] FS-Cache: Loaded
  [...] RPC: Registered named UNIX socket transport module.
  [...] RPC: Registered udp transport module.
  [...] RPC: Registered tcp transport module.
  [...] RPC: Registered tcp NFSv4.1 backchannel transport module.
  [...] FS-Cache: Netfs 'nfs' registered for caching
  Bebin: /scripts/casper-premount ... done.
  done.
  Begin: Trying netboot from 192.168.1.1:/srv/nfs/ubuntu-daily-x64 ... Begin: Trying nfsmount -o nolock -o ro  192.168.1.1:/srv/nfs/ubuntu-daily-x64 /cdrom ... connect: Network is unreachable
  NFS over TCP not available from 192.168.1.1
  connect: Network is unreachable
  connect: Network is unreachable
  NFS over TCP not available from 192.168.1.1
  connect: Network is unreachable
  connect: Network is unreachable
  NFS over TCP not available from 192.168.1.1
  connect: Network is unreachable
  connect: Network is unreachable
  ...
  "

  i use lpxelinux.0 as boot loader.
  the pxe boot menu entry looks like:
      ########################################
      LABEL ubuntu-daily-x64
          MENU LABEL Ubuntu x64 Daily-Live
          KERNEL http://192.168.1.1/nfs/ubuntu-daily-x64/casper/vmlinuz
          INITRD http://192.168.1.1/nfs/ubuntu-daily-x64/casper/initrd
          APPEND nfsroot=192.168.1.1:/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

  this ist the same as for ubuntu 19.04 Disco Dingo, and there i don't
  run into this error message

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