https://bugzilla.kernel.org/show_bug.cgi?id=215923 Bug ID: 215923 Summary: Nested KVM Networking issue Product: Virtualization Version: unspecified Kernel Version: 5.13.0.40 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: high Priority: P1 Component: kvm Assignee: virtualization_kvm@xxxxxxxxxxxxxxxxxxxx Reporter: mobilebackup95@xxxxxxxxx Regression: No Hi, Inside openstack i have an instance of Ubuntu 20.04 and i have installed KVM ( using virt-manager ) to setup a Virtual Machine ... i have done that and i created a VM of ubuntu 20.04 inside the Openstack Instance but there are networking issue while i set the default parameter as setting up the VM ( i mean the networking is as default to NAT ) , So when the VM is up and running the PING to 8.8.8.8 is available and also ping to google.com is also valid which shows that the DNS is correctly working ... but there is not connectivity with packages while i do sudo apt update, it will not get any package update and also the wget to google.com is shows that its connected to it but it wont able to download!!! the same happen with curl to any other websites... I'm confirming that the openstack instance has full access to the internet including ping and wget , .... but the VM is not working correctly! P.S. I have set the ip forwarding, Iptables , ... also disabled firewals but notting changed!! Would you please fix this ? Thanks Best regards -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.