Analysis of packet losses of KVM guest Ubuntu 18.04 on Debian 9 host (interface model type)

When creating a new KVM virtual machine with virt-install , it is advised to use the --os-variant parameter. This "fine-tunes" the virtual machine settings for the selected guest OS.

However on a Debian 9 (Stretch) host, the ubuntu18.04 variant could not be used because it does not show up in the list of operating systems (which is used by virt-install in the background). To manually query the list of available os variants, install the libosinfo-bin package and then run osinfo-query os :

root@debian9:~# apt-get install libosinfo-bin root@debian9:~# osinfo-query os|grep ubuntu  ubuntu10.04          | Ubuntu 10.04 LTS     | 10.04    | http://ubuntu.com/ubuntu/10.04  ubuntu10.10          | Ubuntu 10.10         | 10.10    | http://ubuntu.com/ubuntu/10.10  ubuntu11.04          | Ubuntu 11.04         | 11.04    | http://ubuntu.com/ubuntu/11.04  ubuntu11.10          | Ubuntu 11.10         | 11.10    | http://ubuntu.com/ubuntu/11.10  ubuntu12.04          | Ubuntu 12.04 LTS     | 12.04    | http://ubuntu.com/ubuntu/12.04  ubuntu12.10          | Ubuntu 12.10         | 12.10    | http://ubuntu.com/ubuntu/12.10  ubuntu13.04          | Ubuntu 13.04         | 13.04    | http://ubuntu.com/ubuntu/13.04  ubuntu13.10          | Ubuntu 13.10         | 13.10    | http://ubuntu.com/ubuntu/13.10  ubuntu14.04          | Ubuntu 14.04 LTS     | 14.04    | http://ubuntu.com/ubuntu/14.04  ubuntu14.10          | Ubuntu 14.10         | 14.10    | http://ubuntu.com/ubuntu/14.10  ubuntu15.04          | Ubuntu 15.04         | 15.04    | http://ubuntu.com/ubuntu/15.04  ubuntu15.10          | Ubuntu 15.10         | 15.10    | http://ubuntu.com/ubuntu/15.10  ubuntu16.04          | Ubuntu 16.04         | 16.04    | http://ubuntu.com/ubuntu/16.04  ubuntu16.10          | Ubuntu 16.10         | 16.10    | http://ubuntu.com/ubuntu/16.10  ubuntu17.04          | Ubuntu 17.04         | 17.04    | http://ubuntu.com/ubuntu/17.04  ubuntu17.10          | Ubuntu 17.10         | 17.10    | http://ubuntu.com/ubuntu/17.10  ubuntu4.10           | Ubuntu 4.10          | 4.10     | http://ubuntu.com/ubuntu/4.10  ubuntu5.04           | Ubuntu 5.04          | 5.04     | http://ubuntu.com/ubuntu/5.04  ubuntu5.10           | Ubuntu 5.10          | 5.10     | http://ubuntu.com/ubuntu/5.10  ubuntu6.06           | Ubuntu 6.06 LTS      | 6.06     | http://ubuntu.com/ubuntu/6.06  ubuntu6.10           | Ubuntu 6.10          | 6.10     | http://ubuntu.com/ubuntu/6.10  ubuntu7.04           | Ubuntu 7.04          | 7.04     | http://ubuntu.com/ubuntu/7.04  ubuntu7.10           | Ubuntu 7.10          | 7.10     | http://ubuntu.com/ubuntu/7.10  ubuntu8.04           | Ubuntu 8.04 LTS      | 8.04     | http://ubuntu.com/ubuntu/8.04  ubuntu8.10           | Ubuntu 8.10          | 8.10     | http://ubuntu.com/ubuntu/8.10  ubuntu9.04           | Ubuntu 9.04          | 9.04     | http://ubuntu.com/ubuntu/9.04  ubuntu9.10           | Ubuntu 9.10          | 9.10     | http://ubuntu.com/ubuntu/9.10

Although the setup of the guest was working without any problems, monitoring of the guest OS in the next hours revealed packet losses. And not just one:

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