VM/UCS runs on vmbr=0,
https://192.168.188.12/univention
nextcloud runs as docker under UCS on
https://192.168.188.12/nextcloud
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root@s1:/etc/network# more interfaces
# network interface settings; autogenerated
# Please do NOT modify this file directly, unless you know what
# you're doing.
#
# If you want to manage parts of the network configuration manually,
# please utilize the 'source' or 'source-directory' directives to do
# so.
# PVE will preserve these directives, but will NOT read its network
# configuration from sourced files, so do not attempt to move any of
# the PVE managed interfaces into external files!
auto lo
iface lo inet loopback
iface enp1s0 inet manual
#card
iface enp0s31f6 inet manual
#mainboard
auto vmbr0
iface vmbr0 inet static
address 192.168.188.11/24
gateway 192.168.188.1
bridge-ports enp1s0
bridge-stp off
bridge-fd 0
#card
auto vmbr1
iface vmbr1 inet static
address 192.168.188.13/24
bridge-ports enp0s31f6
bridge-stp off
bridge-fd 0
#mainboard
auto vmbr2
iface vmbr2 inet manual
bridge-ports none
bridge-stp off
bridge-fd 0
#virtual
auto vmbr3
iface vmbr3 inet manual
bridge-ports none
bridge-stp off
bridge-fd 0
#virtual