Server 16.04.2 & .3 Installation under Hyper-V does not show manual network configuration step

[Larion Ltd.]

Affected Versions: Ubuntu Server 16.04.2 / 16.04.3
Setup: Windows Server 2012R2 Hyper-V as Host - Ubuntu Server as Virtual Machine

Installation under Hyper-V does not allow manual input of network configuration. Window does not appear and instead the Installation jumps to the "Computername setting".
Even manually going back a step and trying it again does not work.
It works with Server 16.04.1 on the same Host!

[Larion Ltd. (larion)]

to clarify - Network autodetection fails because i dont use a DHCP-Server.
so the installer lets me choose to set a manual ip. but the network configuration step does not show.
to make it easier to understand please check out the picture attached. please excuse that they are from a german installation run.

[Larion Ltd. (larion)]

next image - cant put all in one comment - sry.

[Larion Ltd. (larion)]

this is what correctly shows up @16.04.1
thank you in advance for your time...

[Larion Ltd. (larion)]

i did not have the time to test it on physical hardware...

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1715240/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[Larion Ltd. (larion)]

Thank you for pointing that out @Bot. This is my first bug report. I added the "debian-installer" as the affected package.

By the way: I installed Ubuntu as a "Generation2"-VM (efi boot) as this is the recommended way and "secure boot" is disabled.

[Dimitri John Ledkov (xnox)]

Sorry for the delay in responding to you.

Could it be a localisation issue? Does networking work correctly if installing in English locale?

[Broder Hansen (bitwolf)]

Hello there, I just stumbled on this bug while installing a vm on Proxmox VE 5.

I had set the localisation to German and was wondering where the manual IP config dialogue went.

xnox wrote the solution: Just go back and set localisation to English and the dialogue appears.

[Larion Ltd. (larion)]

Thank you @ xnox & bitwolf for your comments and suggestions.
I just tried an english installation run and the manual network configuration showed up!

It's really odd, that the localization had not produced this bug @16.04.1.
Im wondering what changed after that, since the localisation @install is far from complete and has not changed, at least as far as I can tell.

Anyways - I guess this bug can be called confirmed. Not sure about the priority level though.
I guess that depends how many other localisations are affected as well.
I tested the following languages: (even though i don't speak any of them...)

Just tried french - works... no bug here.
...
and tried spanish - works... no bug here.
...
and tried italian - works... no bug here.
...
and tried esperanto - bug, same as @german!
...
and tried russian - bug, same as @german!