initial: ZeroTier-like P2P mesh VPN server with multi-tenant Web UI

internal/vl2/network.go

@@ -0,0 +1,38 @@
+package vl2
+
+import (
+	"log/slog"
+
+	"zeromesh/internal/identity"
+)
+
+type NetworkConfig struct {
+	ID        uint32
+	Name      string
+	IPRange   string
+	IP6Range  string
+	MTU       int
+	Multicast bool
+}
+
+type Network struct {
+	Config   NetworkConfig
+	Switch   *Switch
+	ARP      *ARPProxy
+	LocalMAC [6]byte
+	log      *slog.Logger
+}
+
+func NewNetwork(config NetworkConfig, nodeAddr identity.Address, sender PeerSender, log *slog.Logger) *Network {
+	netLog := log.With("network", config.ID, "name", config.Name)
+	mac := GenerateMAC(config.ID, nodeAddr)
+	var macArr [6]byte
+	copy(macArr[:], mac)
+	return &Network{
+		Config:   config,
+		Switch:   NewSwitch(config.ID, sender, netLog),
+		ARP:      NewARPProxy(netLog),
+		LocalMAC: macArr,
+		log:      netLog,
+	}
+}