OMV5 fresh installation with docker - docker network create failes

Hi there, I have just do a fresh install of armbian (Armbian_20.02.5_Odroidn2_buster_legacy_4.9.216) on odroid n2 and installed omv 5 via armbian softy tool.

Docker was installed via omv gui - omv extras - docker / portainer. When I now try to setup a separate network in docker / bridged mode I get the following error:

docker network create --driver=bridge --subnet=192.168.151.0/24 --gateway=192.168.151.1 home

Error response from daemon: Failed to program FILTER chain: iptables failed: iptables --wait -I FORWARD -o br-7a5194cdef64 -j DOCKER: iptables v1.8.2 (nf_tables): RULE_INSERT failed (Invalid argument): rule in chain FORWARD

(exit status 4)

The corresponding entry in syslog in long:

dockerd[3322]: time=“2020-05-04T19:34:03.278587409+02:00” level=error msg=“Handler for POST /v1.40/networks/create returned error: Failed to program FILTER chain: iptables failed: iptables --wait -I FORWARD -o br-c723c76c6721 -j DOCKER: iptables v1.8.2 (nf_tables): RULE_INSERT failed (Invalid argument): rule
in chain FORWARD\n (exit status 4)”

Searching google doesn’t find a possible solution. Anyone here that have a hint for this?