# Functions
CreateBitset initializes a bit set with 2^numBitsWide bits.
GetInterfaceIP obtains the ip addr of a local interface on the host.
GetIPNumber obtains the host id from the host IP.
GetLocalIP obtains the first IP on a local interface on the host.
GetSubnetIP given a subnet IP and host identifier, calculates an IP within the subnet for use.
InitSubnetBitset initializes a bit set with 2^(32 - subnetLen) bits.
ParseCIDR parses a CIDR string into a gateway IP and length.
ParseTagRanges takes a string such as 12-24,48-64 and turns it into a series of TagRange.
SetInterfaceMac : Set mac address of an interface.