I can confirm after the successful downgrade (1:6.2+dfsg-2ubuntu6.13 -> 1:6.2+dfsg-2ubuntu6.11) and restart of the host, the virtiofsd filesystems appear in the VM's as expected.
apt install qemu-system-x86:amd64=1:6.2+dfsg-2ubuntu6.11 apt install qemu-user-static:amd64=1:6.2+dfsg-2ubuntu6.11 apt install qemu-utils:amd64=1:6.2+dfsg-2ubuntu6.11 apt install qemu-system-common:amd64=1:6.2+dfsg-2ubuntu6.11 apt install qemu-block-extra:amd64=1:6.2+dfsg-2ubuntu6.11 apt install qemu-system-data:amd64=1:6.2+dfsg-2ubuntu6.11 apt install qemu-system-x86:amd64=1:6.2+dfsg-2ubuntu6.11 apt install qemu-system-gui:amd64=1:6.2+dfsg-2ubuntu6.11
Probably a more efficient way to downgrade, but it seems to have "worked".
I can confirm after the successful downgrade (1:6.2+ dfsg-2ubuntu6. 13 -> 1:6.2+dfsg- 2ubuntu6. 11) and restart of the host, the virtiofsd filesystems appear in the VM's as expected.
apt install qemu-system- x86:amd64= 1:6.2+dfsg- 2ubuntu6. 11 static: amd64=1: 6.2+dfsg- 2ubuntu6. 11 amd64=1: 6.2+dfsg- 2ubuntu6. 11 common: amd64=1: 6.2+dfsg- 2ubuntu6. 11 extra:amd64= 1:6.2+dfsg- 2ubuntu6. 11 data:amd64= 1:6.2+dfsg- 2ubuntu6. 11 x86:amd64= 1:6.2+dfsg- 2ubuntu6. 11 gui:amd64= 1:6.2+dfsg- 2ubuntu6. 11
apt install qemu-user-
apt install qemu-utils:
apt install qemu-system-
apt install qemu-block-
apt install qemu-system-
apt install qemu-system-
apt install qemu-system-
Probably a more efficient way to downgrade, but it seems to have "worked".