package vl2

import (
	"net"

	"zeromesh/internal/identity"
)

// GenerateMAC creates a deterministic MAC address from network ID and node address.
func GenerateMAC(networkID uint32, nodeAddr identity.Address) net.HardwareAddr {
	mac := make(net.HardwareAddr, 6)
	mac[0] = 0x02 // locally administered, unicast
	mac[1] = byte(networkID >> 16)
	mac[2] = byte(networkID >> 8)
	mac[3] = byte(networkID)
	mac[4] = nodeAddr[3]
	mac[5] = nodeAddr[4]
	return mac
}