OpenWrt UCI Network Generator

Targets OpenWrt 21.02 and later, which introduced config device sections and option device on config interface; the pre-21.02 option ifname style is never emitted. It supports the full shared addressing model, including an 802.1Q VLAN expressed as a config device with option type 8021q. IPv6 only accepts static, dhcp, and none: OpenWrt's dhcpv6 protocol already accepts router advertisements on its own, so this subset has no separate router-advertisement mode, and the shared model's auto method is rejected rather than silently mapped onto dhcpv6 or ignored. A UCI config interface section carries exactly one proto, so the section layout follows the family combination: both families static share one static section; an IPv6-only static configuration is still a static section, because proto none leaves the interface unmanaged and would not apply ip6addr; every other combination gets one section per configured family, mirroring OpenWrt's own wan/wan6 convention, with the IPv6 section named <name>6 whenever an IPv4 section also exists. proto none is therefore never emitted. When manual resolvers are supplied, option peerdns 0 is placed on each section that would otherwise take resolvers from its own peer, so a DHCPv6 section carries its own copy. This tool never contacts a router; apply the result yourself with uci commit network and service network reload, and place any new interface into a firewall zone with the OpenWrt Firewall Rule Generator or the router's own firewall configuration.