Public bug reported: Starting a guest from Virtualbox GUI often brings the NAT-network unavailable.
To get the NAT-network working when this happens: stop the guest-VM and start it again or save the guest-VM state and start it again. When the NAT-network is working it will never stop working unless all guest-VMs are closed for a while. I have noticed when I start multiple VMs from the GUI, that they are not started in selection order (as in previous version of Virtualbox). This means that the NAT-network sometimes is started after the guest-VM and the NAT does not work. $ lsb_release -rd No LSB modules are available. Description: Ubuntu 23.10 Release: 23.10 VirtualBox Graphical User Interface Version 7.0.14_Ubuntu r161095 © 2004-2024 Oracle and/or its affiliates (Qt5.15.10) Copyright © 2024 Oracle and/or its affiliates. $ dpkg -s virtualbox Package: virtualbox Status: install ok installed [...] Version: 7.0.14-dfsg-1~ubuntu1.23.10.1 ** Affects: virtualbox (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2063052 Title: Starting a guest often brings the NAT-network unavailable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/virtualbox/+bug/2063052/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs