[Bug 2122583] [NEW] Current questing daily installation hangs on NW config screen

[Frank Heimes]

Public bug reported:

Today I wanted to use the latest questing daily to test an installation with now kernel 6.17 using an interactive install.
As usual, I've configured static IPs in the basic network setup (casper).
And when I then reach the "Network configuration" screen, I notice that DHCPv6 is suddenly selected (which was not the case in the past), and I cannot do anything anymore, probably due to the loss of the static IP configuration.
Due to this I can also not login to the system and save the logs or anything like that.

Hence I just attach a screenshot ...

** Affects: ubuntu-z-systems
     Importance: Critical
         Status: New

** Affects: subiquity (Ubuntu)
     Importance: Critical
         Status: New


** Tags: installation s390x

** Attachment added: "Screenshot from 2025-09-11 12-10-21.png"
   https://bugs.launchpad.net/bugs/2122583/+attachment/5908428/+files/Screenshot%20from%202025-09-11%2012-10-21.png

** Also affects: ubuntu-z-systems
   Importance: Undecided
       Status: New

** Changed in: ubuntu-z-systems
   Importance: Undecided => Critical

** Changed in: subiquity (Ubuntu)
   Importance: Undecided => Critical

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https://bugs.launchpad.net/bugs/2122583

Title:
  Current questing daily installation hangs on NW config screen

Status in Ubuntu on IBM z Systems:
  New
Status in subiquity package in Ubuntu:
  New

Bug description:
  Today I wanted to use the latest questing daily to test an installation with now kernel 6.17 using an interactive install.
  As usual, I've configured static IPs in the basic network setup (casper).
  And when I then reach the "Network configuration" screen, I notice that DHCPv6 is suddenly selected (which was not the case in the past), and I cannot do anything anymore, probably due to the loss of the static IP configuration.
  Due to this I can also not login to the system and save the logs or anything like that.

  Hence I just attach a screenshot ...

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