Cannot reboot instances on Windows 10 or 11 if /etc/hostname changes (within the instance) #3346
Description
Multipass instances work great initially on Windows!
Until we try to reboot them!
Logs often show:
[u22] Error getting extra IP addresses: ssh connection failed: 'Failed to resolve hostname u22.mshome.net (No such host is known. )'
[u22] Waiting for SSH to be up
Thank you for helping us to try to resolve this — as it's affecting everyone who's attempted to use Multipass on Windows 10 and Windows 11 so far:
Possibly related: Internet Connection Sharing file C:\WINDOWS\System32\drivers\etc\hosts.ics appears to be accidentally-but-regularly "damaged" by Multipass — which somehow inserts stray numbers as follows:
192.168.179.12 box.mshome.net # 2024 1 1 8 23 53 18 185
192.168.176.1 DESKTOP-XXXXXXX.mshome.net # 2028 12 6 30 23 53 18 185
192.168.179.226 primary.mshome.net # 2024 1 1 8 22 3 21 851
0 54 30 497
67
The https://multipass.run/docs/troubleshoot-networking Troubleshooting Doc seemed very promising. But then all 3 tips listed there (at the bottom, for Windows) were attempted, and so far do not resolve the problem.
RECAP: All such Multipass instances work great until we try to reboot them. No matter how we reboot them, they fail to reboot. Example:
C:\Users\XXXX>multipass restart u22
restart failed: ssh connection failed: 'Failed to resolve hostname u22.mshome.net (No such host is known. )'
C:\Users\XXXX>multipass shell u22
shell failed: ssh connection failed: 'Failed to resolve hostname u22.mshome.net (No such host is known. )'
C:\Users\XXXX>multipass list
Name State IPv4 Image
u22 Running N/A Ubuntu 22.04 LTS
C:\Users\XXXX>multipass stop u22
C:\Users\XXXX>multipass list
Name State IPv4 Image
u22 Stopped -- Ubuntu 22.04 LTS
C:\Users\XXXX>multipass start u22
start failed: The following errors occurred:
u22: timed out waiting for response
To Reproduce
- Install Multipass 1.12.2 or 1.13.0 RC onto Windows 10 or 11, wiping all prior Multipass settings and instances to be extra sure.
- Run
multipass launch 22.04 -m 2G -d 20G --cloud-init omg.yml -n u22as specified in the Internet-in-a-Box instructions and notice that everything works great until you reboot! - Try to reboot the instance 🤔
Logs
- multipass-windows11-log.txt (partly XML)
- multipass-windows11-log.evtx.txt (remove the .txt suffix, to view the original .evtx log file which GitHub blocks)
- https://sprunge.us/XESQsQ?en (internal diagnostics showing OS/networking details of Ubuntu 22.04 instance, just prior to attempting reboot!)
Additional info
C:\Users\XXXX>multipass version
multipass 1.13.0-rc.1308+g240e6cae1.win
multipassd 1.13.0-rc.1308+g240e6cae1.win
C:\Users\XXXX>multipass info --all
Warning: the `--all` flag for the `info` command is deprecated. Please use `info` with no positional arguments for the same effect.
info failed: ssh connection failed: 'Failed to resolve hostname u22.mshome.net (No such host is known. )'
C:\Users\XXXX>multipass info
info failed: ssh connection failed: 'Failed to resolve hostname u22.mshome.net (No such host is known. )'
C:\Users\XXXX>multipass get local.driver
hyperv