[4.1.0] - 2022-02-04

Added:
* read OpenWrt 21.02 network config, while keeping compatibility with OpenWrt 19.07 config

Changed:
* mqtt: make advertizments a bit more efficient

Fixed:
* lan: Disable IPv6 server and ra when DHCP is disabled
* networks: fix detection of wifi interfaces
* guest: fix guest network firewall rules