Reliance on Booster nodes

[mathcrypto]

The current P2P implementation doesn’t work well behind a NAT. Since most users are behind a NAT, there’s a de-facto reliance on publicly accessible nodes that people behind NATs can use as relays. There’s no incentive to run such a node, other than wanting to keep the network alive. The solution is to make our P2P implementation work behind most NATs, so there’s no reliance on boosters.