Not Booting after apt-get upgrade

[auphofBSF]

Using the current commit, the Qemu VM of a PI3 is not booting after having done a sudo apt-get upgrade
Presume there is something in the upgrade that breaks the VM but do not know where to start finding a fix

this is a snippet of the vm startup

........
Extracting /fixup4x.dat to /fat/fixup4x.dat
Extracting /LICENCE.broadcom to /fat/LICENCE.broadcom
Searching for kernel='kernel8.img'
Searching for dtb='bcm2710-rpi-3-b-plus.dtb'
Booting QEMU machine "raspi3b" with kernel=/fat/kernel8.img dtb=/fat/bcm2710-rpi-3-b-plus.dtb
qemu-system-aarch64: Slirp: Failed to send packet, ret: -1
qemu-system-aarch64: Slirp: Failed to send packet, ret: -1
qemu-system-aarch64: Slirp: Failed to send packet, ret: -1
qemu-system-aarch64: Slirp: Failed to send packet, ret: -1
qemu-system-aarch64: Slirp: Failed to send packet, ret: -1

the Slirp: Failed ... messages repeat with long intervals between 5+min and the docker VM is using 50% plus of CPU resources of HOST

The following while not the same as an upgrade prove to me that updates are persistant across reboots.

sudo apt-get update requires the argument --allow-releaseinfo-change
sudo apt-get install git

Host is DockerDesktop , windows 10