[Bug 1990621] Re: PXE Boot contains wrong suggested link to ISO for live file system

[Dominik Viererbe]

I did some research today. I think this bug affects all LTS releases.

As Nick Rosbrook (enr0n) suggested we can use $VERSION to parse the version id with the point release number like this $(echo "$VERSION"| grep -o -s -E '^[0-9\.]+')
, but this would still not fix the bug for all LTS users who haven't the most up to date /etc/os-release file.

For example:
When 22.04.02 gets released; a user that hasn't updated yet still has an /etc/os-release file with the value VERSION="22.04.1 LTS (Jammy Jellyfish)"
This would still result in a broken link.

Alternative solutions would be:
1. using a web-crawler that looks for the latest release url (overcomplicated)
2. setting up a redirection from the "broken" url to the correct one

Alternative 2 would result in an instant-fix without needing the user to
update and is simple. I have to find out who I would need to ask for
that.

** Changed in: casper (Ubuntu Jammy)
     Assignee: (unassigned) => Dominik Viererbe (dviererbe)

** Changed in: casper (Ubuntu)
     Assignee: (unassigned) => Dominik Viererbe (dviererbe)

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https://bugs.launchpad.net/bugs/1990621

Title:
  PXE Boot contains wrong suggested link to ISO for live file system

Status in casper package in Ubuntu:
  Triaged
Status in linux package in Ubuntu:
  Invalid
Status in casper source package in Jammy:
  Triaged
Status in linux source package in Jammy:
  Invalid

Bug description:
  When PXE booting without pulling in squashfs correctly the system
  tried to be helpful (:-) and grab an ISO. The 22.04.1 Jammy release
  contains a link to the old version which is not present anymore.

  -------
  Unable to find a medium containing a live file system
  Attempt interactive netboot from a URL?
  yes no (default yes): 
  Two methods available for IP configuration:
    * static: for static IP configuration
    * dhcp: for automatic IP configuration
  static dhcp (default 'dhcp'): 
  vlan id (optional): 
   https://releases.ubuntu.com/jammy/ubuntu-22.04-live-server-amd64.iso (default)
   https://releases.ubuntu.com/jammy/ubuntu-22.04-desktop-amd64.iso
  url: 
  http_proxy (optional): 
  [  125.454385] igb 0000:00:14.0 eno1: igb: eno1 NIC Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
  [  125.566067] IPv6: ADDRCONF(NETDEV_CHANGE): eno1: link becomes ready
  Begin: Trying netboot from 10.0.~.1: ... Begin: Trying to download and mount https://releases.ubuntu.com/jammy/ubuntu-22.04-live-server-amd64.iso ... 

  BusyBox v1.30.1 (Ubuntu 1:1.30.1-7ubuntu3) built-in shell (ash)
  Enter 'help' for a list of built-in commands.

  (initramfs) Connecting to releases.ubuntu.com (185.125.190.37:443)
  wget: server returned error: HTTP/1.1 404 Not Found
  done.
  Unable to find a medium containing a live file system

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