GetIndexedIP returns a net.IP that is subnet.IP + index in the contiguous IP space.

NewAllocatorCIDRRange creates a Range over a net.IPNet backed by in-memory store.

RangeSize returns the size of a range in valid addresses.

ErrAllocated indicates an IP already allocated error.

ErrFull indicates a range is full error.

ErrMismatchedNetwork indicates a mismatched network error.

Range is a contiguous block of IPs that can be allocated atomically.