nixpkgs/lib/network/default.nix

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{ lib }:
let
inherit (import ./internal.nix { inherit lib; }) _ipv6;
in
{
ipv6 = {
/**
Creates an `IPv6Address` object from an IPv6 address as a string. If
the prefix length is omitted, it defaults to 64. The parser is limited
to the first two versions of IPv6 addresses addressed in RFC 4291.
The form "x:x:x:x:x:x:d.d.d.d" is not yet implemented. Addresses are
NOT compressed, so they are not always the same as the canonical text
representation of IPv6 addresses defined in RFC 5952.
# Type
```
fromString :: String -> IPv6Address
```
# Examples
```nix
fromString "2001:DB8::ffff/32"
=> {
address = "2001:db8:0:0:0:0:0:ffff";
prefixLength = 32;
}
```
# Arguments
- [addr] An IPv6 address with optional prefix length.
*/
fromString =
addr:
let
splittedAddr = _ipv6.split addr;
addrInternal = splittedAddr.address;
prefixLength = splittedAddr.prefixLength;
address = _ipv6.toStringFromExpandedIp addrInternal;
in
{
inherit address prefixLength;
};
};
}