/// <reference types="node" />
/**
 * Converts a buffer containing an IPv6 address into string notation.
 * String notation consists of 8 sets of 16-bits each. Each group is
 * written as four hexadecimal values separated by colons (:).  This method
 * follows RFC 5952 shortening.
 *
 * @remarks
 * RFC 5952 https://tools.ietf.org/html/rfc5952
 *
 * The following shortening rules are applied:
 *   1. Leading zeros are shorted as much as possible
 *   2. Zero compression is from left to right and
 *   3. Addresses are returned in lowercase.
 */
export declare function ipv6StringFromBuffer(buffer: Buffer): string;