Class org.apache.hadoop.net.NetUtils

Added Methods
void connect(Socket, SocketAddress, SocketAddress, int)	Like SocketAddres int)} but also takes a local address and port to bind the socket to.
List getIPs(String, boolean)	Return an InetAddress for each interface that matches the given subnet specified using CIDR notation.
boolean isValidSubnet(String)	@return true if the given string is a subnet specified using CIDR notation false otherwise