I don’t understand - how is it not a server port? When a datagram arrives from the network it’s addressed to the server’s IP and a port (and from a client IP a

I don’t understand - how is it not a server port? When a datagram arrives from the network it’s addressed to the server’s IP and a port (and from a client IP and port). How is the data delivered to the correct socket if not through the 5-tuple (which includes server port) to socket mapping?