The Mesh Multicast Flooding Daemon helps with spreading packets in a layer 3 mesh. It provides a tun interface where it accepts packets for forwarding to all other nodes. This is rather simple for now, but it may be improved in a future release. After that, it'll be renamed to Mesh Multicast Forwarding Daemon.

mmfd is built to work in tandem with babeld. It'll connect to babeld's front-end where it'll listen for mesh neighbours discovered by babeld.

• connect to babeld
• listen for neighbours
• automatically create sockets as needed
• create tun device
• set MTU to 1280
• use own IP protocol (253 for now)
• decrement TTL in packet itself
• identify seen packets by (src, dst, nonce)