Module Ipaddr.V6

A collection of functions for IPv6 addresses.

type t

Type of the internet protocol v6 address of a host

val make : int -> int -> int -> int -> int -> int -> int -> int -> t

Converts the low bytes of eight int values into an abstract V6.t.

Text string conversion

val of_string_exn : string -> t

of_string_exn ipv6_string is the address represented by ipv6_string. Raises Parse_error if ipv6_string is not a valid representation of an IPv6 address.

val of_string : string -> (t, [> `Msg of string ]) Stdlib.result

Same as of_string_exn but returns an option type instead of raising an exception.

val of_string_raw : string -> int Stdlib.ref -> t

Same as of_string_exn but takes as an extra argument the offset into the string for reading.

val to_string : t -> string

to_string ipv6 is the string representation of ipv6, i.e. XXX:XX:X::XXX:XX.

val to_buffer : Stdlib.Buffer.t -> t -> unit

to_buffer buf ipv6 writes the string representation of ipv6 into the buffer buf.

val pp : Stdlib.Format.formatter -> t -> unit

pp f ipv6 outputs a human-readable representation of ipv6 to the formatter f.

Bytestring conversion

val of_bytes_exn : string -> t

of_bytes_exn ipv6_octets is the address represented by ipv6_octets. Raises Parse_error if ipv6_octets is not a valid representation of an IPv6 address.

val of_bytes : string -> (t, [> `Msg of string ]) Stdlib.result

Same as of_bytes_exn but returns an result type instead of raising an exception.

val of_bytes_raw : string -> int -> t

Same as of_bytes_exn but takes an extra paramenter, the offset into the bytes for reading.

val to_bytes : t -> string

to_bytes ipv6 is a string of length 16 encoding ipv6.

val to_bytes_raw : t -> Stdlib.Bytes.t -> int -> unit

to_bytes_raw ipv6 bytes offset writes the 16 bytes encoding of ipv6 into bytes at offset offset.

Int conversion

val of_int64 : (int64 * int64) -> t

of_int64 (ho, lo) is the IPv6 address represented by two int64.

val to_int64 : t -> int64 * int64

to_int64 ipv6 is the 128-bit packed encoding of ipv6.

val of_int32 : (int32 * int32 * int32 * int32) -> t

of_int32 (a, b, c, d) is the IPv6 address represented by four int32.

val to_int32 : t -> int32 * int32 * int32 * int32

to_int32 ipv6 is the 128-bit packed encoding of ipv6.

val of_int16 : (int * int * int * int * int * int * int * int) -> t

of_int16 (a, b, c, d, e, f, g, h) is the IPv6 address represented by eight 16-bit int.

val to_int16 : t -> int * int * int * int * int * int * int * int

to_int16 ipv6 is the 128-bit packed encoding of ipv6.

MAC conversion

val multicast_to_mac : t -> Macaddr.t

multicast_to_mac ipv6 is the MAC address corresponding to the multicast address ipv6. Described by RFC 2464.

Host conversion

val to_domain_name : t -> string list

to_domain_name ipv6 is the domain name label list for reverse lookups of ipv6. This includes the .ip6.arpa. suffix.

Common addresses

val unspecified : t

unspecified is ::.

val localhost : t

localhost is ::1.

val interface_nodes : t

interface_nodes is ff01::01.

link_nodes is ff02::01.

val interface_routers : t

interface_routers is ff01::02.

link_routers is ff02::02.

val site_routers : t

site_routers is ff05::02.

module Prefix : sig ... end

A module for manipulating IPv6 network prefixes.

val scope : t -> scope

scope ipv6 is the classification of ipv6 by the scope hierarchy.

link_address_of_mac mac is the link-local address for an Ethernet interface derived by the IEEE MAC -> EUI-64 map with the Universal/Local bit complemented for IPv6.

see https://tools.ietf.org/html/rfc2464#section-4

RFC 2464

val is_global : t -> bool

is_global ipv6 is a predicate indicating whether ipv6 globally addresses a node.

val is_multicast : t -> bool

is_multicast ipv6 is a predicate indicating whether ipv6 is a multicast address.

val is_private : t -> bool

is_private ipv6 is a predicate indicating whether ipv6 privately addresses a node.

include Stdlib.Map.OrderedType with type t := t
type t

The type of the map keys.

val compare : t -> t -> int

A total ordering function over the keys. This is a two-argument function f such that f e1 e2 is zero if the keys e1 and e2 are equal, f e1 e2 is strictly negative if e1 is smaller than e2, and f e1 e2 is strictly positive if e1 is greater than e2. Example: a suitable ordering function is the generic structural comparison function Pervasives.compare.