Comment by rainbowgarden

It will overflow to filler[3]. ie the 4th byte. see the struct sockaddr:

	 * first 2 bytes: Address Family,

	 * next 2 bytes: port,

	 * next 2 bytes: ipaddr,

	 * next 8 bytes: zeroes.

so filler[2] and filler[3] will form a short which will contain the port number.