[2.1.0] - 2021-08-02

- utils: add `ip_network_address` helper function

- router_notifications: change default "from" and "host" of custom smtp server to empty string

- dns: fix setting custom forwarder port for non-TLS servers
- lan: update openvpn server push route configuration on lan update
- lan: fix crash on dhcp host which has multiple MAC addresses (contributed by ktetzlaff)
- lan: fix crash on negative dhcpv6 lease time; set it to 0 for now
- wan: add missing fw rule for 6to4
- zeroconf: Foris-controller won't fully start when something is running on port 5353