[Bug 1398977] [NEW] all hostnames on network appear taken when changing hostname.

[Brendan Perrine]

Public bug reported:

To reproduce use a lubuntu amd64 iso and isntall on laptop and choose
manual partitiong. Then ichoose for a btrfs partition as / and reuse xfs
as home. then it asks for timezone and show new york and I switched to
Los Angeles. Then it came to enter username and I entered brenda. I
wanted to change the hostname from brenda-Hp-pavillion-1230 to something
like btrviv and it said it was already taken on the network. I tried
typing in more hostnames and it seemed that they already existed on the
network but having everything I try to type in be already taken is
unlikely ad I tried like 10 different hostnames and still ubiquity said
they were all taken. I am connected over wifi with a

wlan0     IEEE 802.11bg  ESSID:"Steaksauce"  
          Mode:Managed  Frequency:2.422 GHz  Access Point: C4:3D:C7:A4:41:7C   
          Bit Rate=54 Mb/s   Tx-Power=20 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=68/70  Signal level=-42 dBm  
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:29  Invalid misc:48   Missed beacon:0
but I also have a broadcom 4322 on pci that does not work out of the box but it is not using that. Also clicking back and then continue again I would still get that all hostnames are invalid. 

Also I am not sure if this is so early in the installer that it fails as
it has not installed anything but in my live system netihr
/var/log/installer/syslog or /var/log/installer/partman exist

ubiquity:
  Installed: 2.21.1
  Candidate: 2.21.1
  Version table:
 *** 2.21.1 0
        500 http://archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages
        100 /var/lib/dpkg/status

Description:	Ubuntu Vivid Vervet (development branch)
Release:	15.04

I expected to be able to change my hostname to a valid hostname. Instead
I could not change the hostname. I could try using the defualt hostname
as a workaround and chaning it later.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubiquity 2.21.1
ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
Uname: Linux 3.16.0-25-generic x86_64
ApportVersion: 2.14.7-0ubuntu10
Architecture: amd64
CasperVersion: 1.346
Date: Wed Dec  3 15:38:18 2014
InstallCmdLine: file=/cdrom/preseed/lubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash --
LiveMediaBuild: Lubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141203)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug lubuntu ubiquity-2.21.1 vivid

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https://bugs.launchpad.net/bugs/1398977

Title:
  all hostnames on network appear taken when changing hostname.

Status in ubiquity package in Ubuntu:
  New

Bug description:
  To reproduce use a lubuntu amd64 iso and isntall on laptop and choose
  manual partitiong. Then ichoose for a btrfs partition as / and reuse
  xfs as home. then it asks for timezone and show new york and I
  switched to Los Angeles. Then it came to enter username and I entered
  brenda. I wanted to change the hostname from brenda-Hp-pavillion-1230
  to something like btrviv and it said it was already taken on the
  network. I tried typing in more hostnames and it seemed that they
  already existed on the network but having everything I try to type in
  be already taken is unlikely ad I tried like 10 different hostnames
  and still ubiquity said they were all taken. I am connected over wifi
  with a

  wlan0     IEEE 802.11bg  ESSID:"Steaksauce"  
            Mode:Managed  Frequency:2.422 GHz  Access Point: C4:3D:C7:A4:41:7C   
            Bit Rate=54 Mb/s   Tx-Power=20 dBm   
            Retry short limit:7   RTS thr:off   Fragment thr:off
            Power Management:off
            Link Quality=68/70  Signal level=-42 dBm  
            Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
            Tx excessive retries:29  Invalid misc:48   Missed beacon:0
  but I also have a broadcom 4322 on pci that does not work out of the box but it is not using that. Also clicking back and then continue again I would still get that all hostnames are invalid. 

  Also I am not sure if this is so early in the installer that it fails
  as it has not installed anything but in my live system netihr
  /var/log/installer/syslog or /var/log/installer/partman exist

  ubiquity:
    Installed: 2.21.1
    Candidate: 2.21.1
    Version table:
   *** 2.21.1 0
          500 http://archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages
          100 /var/lib/dpkg/status

  Description:	Ubuntu Vivid Vervet (development branch)
  Release:	15.04

  I expected to be able to change my hostname to a valid hostname.
  Instead I could not change the hostname. I could try using the defualt
  hostname as a workaround and chaning it later.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: ubiquity 2.21.1
  ProcVersionSignature: Ubuntu 3.16.0-25.33-generic 3.16.7
  Uname: Linux 3.16.0-25-generic x86_64
  ApportVersion: 2.14.7-0ubuntu10
  Architecture: amd64
  CasperVersion: 1.346
  Date: Wed Dec  3 15:38:18 2014
  InstallCmdLine: file=/cdrom/preseed/lubuntu.seed boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash --
  LiveMediaBuild: Lubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141203)
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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