NAME
Net::CIDR::Lookup::IPv6
DESCRIPTION
This is the IPv6 version of Net::CIDR::Lookup. It generally provides the same methods, with the distinction that the add_num/add_num_range methods that accept an IPv4 address as an integer have been split in two to accommodate different representations for an IPv6 address:
add_vec/add_vec_rangeaccepts a 128-bit Bit::Vector object for an addressadd_str/add_str_rangetakes a packed string as returned bySocket::unpack_sockaddr_in6
For all other methods, see Net::CIDR::Lookup.
This module requires an IPv6-enabled Socket. As there is no way to ask for this using ExtUtils::MakeMaker, do make sure you have it.
VERSION HISTORY
See Net::CIDR::Lookup::IPv6::Changes
METHODS
add
Arguments: $cidr, $value
Return Value: none; dies on error
Adds VALUE to the tree under the key CIDR. CIDR must be a string containing an IPv6 address followed by a slash and a number of network bits. Bits to the right of this mask will be ignored.
add_range
Arguments: $range, $value
Return Value: none; dies on error
Adds VALUE to the tree for each address included in RANGE which must be a hyphenated range of IPv6 addresses and with the first address being numerically smaller the second. This range will be split up into as many CIDR blocks as necessary (algorithm adapted from a script by Dr. Liviu Daia).
add_vec
Arguments: $address, $bits, $value
Return Value: none; dies on error
Like add() but accepts an address as a Bit::Vector object and the network bits as a separate integer instead of all in one string.
add_str
Arguments: $address, $bits, $value
Return Value: none; dies on error
Like add_vec() but accepts an address as a packed string as returned by Socket::unpack_sockaddr_in6.
add_vec_range
Arguments: $start, $end, $value
Return Value: none; dies on error
Like add_range() but accepts addresses as separate Bit::Vector objects instead of a range string.
add_str_range
Arguments: $start, $end, $value
Return Value: true for successful completion; dies on error
Like add_vec_range() but accepts addresses as packed strings as returned by Socket::unpack_sockaddr_in6.
lookup
Arguments: $address
Return Value: value assoiated with this address or undef
Looks up an IPv6 address specified as a string and returns the value associated with the network containing it. So far there is no way to tell which network that is though.
lookup_vec
Arguments: $address
Return Value: value assoiated with this address or undef
Like lookup() but accepts the address as a Bit::Vector object.
lookup_str
Arguments: $address
Return Value: value assoiated with this address or undef
Like lookup() but accepts the address as a packed string as returned by Socket::unpack_sockaddr_in6.
to_hash
Arguments: none
Return Value: $hashref
Returns a hash representation of the tree with keys being CIDR-style network addresses.
walk
Arguments: $coderef to call for each tree entry. Callback arguments are:
$address-
The network address as a Bit::Vector object. The callback must not change this object's contents, use $addr->Clone if in doubt!
$bits-
The current CIDR block's number of network bits
$value-
The value associated with this block
Return Value: nothing useful
BUGS
- The IPv6 version hasn't seen any real-world testing and the unit tests are still rather scarce, so there will probably be more bugs than listed here.
- I didn't need deletions yet and deleting parts of a CIDR block is a bit more complicated than anything this class does so far, so it's not implemented.
- Storing an
undefvalue does not work and yields an error. This would be relatively easy to fix at the cost of some memory so that's more a design decision. - A consequence of the same design is also that a /0 block can't be formed. Although it doesn't make much sense, this might happen if your input is that weird.
AUTHORS, COPYRIGHTS & LICENSE
Matthias Bethke <matthias@towiski.de>
Licensed unter the Artistic License 2.0
SEE ALSO
This module's methods are based even more loosely on Net::CIDR::Lite than those of Net::CIDR::Lookup.