All errors are timeout errors when trying to access armhf archive:

# libvirt armhf:

The following packages will be upgraded:
  apt apt-transport-https apt-utils bash binutils binutils-arm-linux-gnueabihf
  binutils-common bzip2 console-setup console-setup-linux dbus debconf
  debconf-i18n distro-info-data dmsetup gcc-8-base initramfs-tools
  initramfs-tools-bin initramfs-tools-core isc-dhcp-client isc-dhcp-common
  keyboard-configuration libapt-inst2.0 libapt-pkg5.0 libbinutils libbz2-1.0
  libdb5.3 libdbus-1-3 libdevmapper1.02.1 libdns-export1100 libelf1 libexpat1
  libgcc1 libglib2.0-0 libglib2.0-data libgnutls30 libisc-export169
  libldap-2.4-2 libldap-common libnss-systemd libpam-systemd
  libpython3.6-minimal libpython3.6-stdlib libseccomp2 libsqlite3-0 libssl1.1
  libstdc++6 libsystemd0 libudev1 linux-headers-generic login netplan.io nplan
  openssl passwd python3.6 python3.6-minimal systemd systemd-sysv tzdata
  ubuntu-minimal udev vim-common vim-tiny xxd
65 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 35.3 MB of archives.
After this operation, 85.9 MB of additional disk space will be used.
Err:1 http://ftpmaster.internal/ubuntu bionic-updates/main armhf bash armhf 4.4.18-2ubuntu1.2
  Could not connect to ftpmaster.internal:80 (91.189.89.99), connection timed out

----

## nova armhf:

The following packages will be upgraded:
  apt apt-transport-https apt-utils bash binutils binutils-arm-linux-gnueabihf
  binutils-common bzip2 console-setup console-setup-linux dbus debconf
  debconf-i18n distro-info-data dmsetup gcc-8-base initramfs-tools
  initramfs-tools-bin initramfs-tools-core isc-dhcp-client isc-dhcp-common
  keyboard-configuration libapt-inst2.0 libapt-pkg5.0 libbinutils libbz2-1.0
  libdb5.3 libdbus-1-3 libdevmapper1.02.1 libdns-export1100 libelf1 libexpat1
  libgcc1 libglib2.0-0 libglib2.0-data libgnutls30 libisc-export169
  libldap-2.4-2 libldap-common libnss-systemd libpam-systemd
  libpython3.6-minimal libpython3.6-stdlib libseccomp2 libsqlite3-0 libssl1.1
  libstdc++6 libsystemd0 libudev1 linux-headers-generic login netplan.io nplan
  openssl passwd python3.6 python3.6-minimal systemd systemd-sysv tzdata
  ubuntu-minimal udev vim-common vim-tiny xxd
65 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 35.3 MB of archives.
After this operation, 85.9 MB of additional disk space will be used.
Err:1 http://ftpmaster.internal/ubuntu bionic-updates/main armhf bash armhf 4.4.18-2ubuntu1.2
  Could not connect to ftpmaster.internal:80 (91.189.89.99), connection timed out

----

## systemd armhf:

The following packages will be upgraded:
  apt apt-transport-https apt-utils bash binutils binutils-arm-linux-gnueabihf
  binutils-common bzip2 console-setup console-setup-linux dbus debconf
  debconf-i18n distro-info-data dmsetup gcc-8-base initramfs-tools
  initramfs-tools-bin initramfs-tools-core isc-dhcp-client isc-dhcp-common
  keyboard-configuration libapt-inst2.0 libapt-pkg5.0 libbinutils libbz2-1.0
  libdb5.3 libdbus-1-3 libdevmapper1.02.1 libdns-export1100 libelf1 libexpat1
  libgcc1 libglib2.0-0 libglib2.0-data libgnutls30 libisc-export169
  libldap-2.4-2 libldap-common libnss-systemd libpam-systemd
  libpython3.6-minimal libpython3.6-stdlib libseccomp2 libsqlite3-0 libssl1.1
  libstdc++6 libsystemd0 libudev1 linux-headers-generic login netplan.io nplan
  openssl passwd python3.6 python3.6-minimal systemd systemd-sysv tzdata
  ubuntu-minimal udev vim-common vim-tiny xxd
65 upgraded, 2 newly installed, 0 to remove and 0 not upgraded.
Need to get 35.3 MB of archives.
After this operation, 85.9 MB of additional disk space will be used.
Err:1 http://ftpmaster.internal/ubuntu bionic-updates/main armhf bash armhf 4.4.18-2ubuntu1.2
  Could not connect to ftpmaster.internal:80 (91.189.89.99), connection timed out