class

IPAddress::IPv6::Loopback

Inherits IPAddress::IPv6 < Comparable < Enumerable < IPAddress < Reference < Object

The loopback address is a unicast localhost address. If an application in a host sends packets to this address, the IPv6 stack will loop these packets back on the same virtual interface.

Loopback addresses are expressed in the following form:

::1

or, with their appropriate prefix,

::1/128

As for the unspecified addresses, IPv6 loopbacks can be created with IPAddress calling their own class:

ip6 = IPAddress::IPv6::Loopback.new
ip6.to_string # => "::1/128"

or by using the wrapper:

ip6 = IPAddress.new "::1"
ip6.to_string # => "::1/128"

Checking if an address is loopback is easy with the IPv6#loopback? method:

ip6.loopback? # => true

The IPv6 loopback address corresponds to 127.0.0.1 in IPv4.

Constructors

new

Creates a new IPv6 unspecified address.

ip6 = IPAddress::IPv6::Loopback.new
ip6.to_string # => "::1/128"

Source