1IP(3) User Contributed Perl Documentation IP(3)
2
6 NetAddr::IP - Manages IPv4 and IPv6 addresses and subnets
7
9 use NetAddr::IP qw(
10 Compact
11 Coalesce
12 Zeros
13 Ones
14 V4mask
15 V4net
16 netlimit
17 :aton DEPRECATED
18 :lower
19 :upper
20 :old_storable
21 :old_nth
22 :rfc3021
23 :nofqdn
24 );
25 NOTE: NetAddr::IP::Util has a full complement of network address
27 utilities to convert back and forth between binary and text.
28 inet_aton, inet_ntoa, ipv6_aton, ipv6_ntoa
30 ipv6_n2x, ipv6_n2d inet_any2d, inet_n2dx,
31 inet_n2ad, inetanyto6, ipv6to4
32 See NetAddr::IP::Util
34 my $ip = new NetAddr::IP '127.0.0.1';
36 or if you prefer
37 my $ip = NetAddr::IP->new('127.0.0.1);
38 or from a packed IPv4 address
39 my $ip = new_from_aton NetAddr::IP (inet_aton('127.0.0.1'));
40 or from an octal filtered IPv4 address
41 my $ip = new_no NetAddr::IP '127.012.0.0';
42 print "The address is ", $ip->addr, " with mask ", $ip->mask, "\n" ;
44 if ($ip->within(new NetAddr::IP "127.0.0.0", "255.0.0.0")) {
46 print "Is a loopback address\n";
47 }
48 # This prints 127.0.0.1/32
50 print "You can also say $ip...\n";
51 * The following four functions return ipV6 representations of:
53 :: = Zeros();
55 FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF = Ones();
56 FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:: = V4mask();
57 ::FFFF:FFFF = V4net();
58 Will also return an ipV4 or ipV6 representation of a
60 resolvable Fully Qualified Domanin Name (FQDN).
61 ###### DEPRECATED, will be remove in version 5 ############
63 * To accept addresses in the format as returned by
65 inet_aton, invoke the module as:
66 use NetAddr::IP qw(:aton);
68 ###### USE new_from_aton instead ##########################
70 * To enable usage of legacy data files containing NetAddr::IP objects
72 stored using the Storable module.
73 use NetAddr::IP qw(:old_storable);
75 * To compact many smaller subnets (see:
77 "$me->compact($addr1,$addr2,...)"
78 @compacted_object_list = Compact(@object_list)
80 * Return a reference to list of "NetAddr::IP" subnets of $masklen mask
82 length, when $number or more addresses from @list_of_subnets are found
83 to be contained in said subnet.
84 $arrayref = Coalesce($masklen, $number, @list_of_subnets)
86 * By default NetAddr::IP functions and methods return string IPv6
88 addresses in uppercase. To change that to lowercase:
89 NOTE: the AUGUST 2010 RFC5952 states:
91 4.3. Lowercase
93 The characters "a", "b", "c", "d", "e", and "f" in an IPv6
95 address MUST be represented in lowercase.
96 It is recommended that all NEW applications using NetAddr::IP be
98 invoked as shown on the next line.
99 use NetAddr::IP qw(:lower);
101 * To ensure the current IPv6 string case behavior even if the default
103 changes:
104 use NetAddr::IP qw(:upper);
106 * To set a limit on the size of nets processed or returned by
108 NetAddr::IP.
109 Set the maximum number of nets beyond which NetAddr::IP will return an
111 error as a power of 2 (default 16 or 65536 nets). Each 2**16 consumes
112 approximately 4 megs of memory. A 2**20 consumes 64 megs of memory, A
113 2**24 consumes 1 gigabyte of memory.
114 use NetAddr::IP qw(netlimit);
116 netlimit 20;
117 The maximum netlimit allowed is 2**24. Attempts to set limits below the
119 default of 16 or above the maximum of 24 are ignored.
120 Returns true on success, otherwise "undef".
122
124 Un-tar the distribution in an appropriate directory and type:
125 perl Makefile.PL
127 make
128 make test
129 make install
130 NetAddr::IP depends on NetAddr::IP::Util which installs by default with
132 its primary functions compiled using Perl's XS extensions to build a C
133 library. If you do not have a C complier available or would like the
134 slower Pure Perl version for some other reason, then type:
135 perl Makefile.PL -noxs
137 make
138 make test
139 make install
140
142 This module provides an object-oriented abstraction on top of IP
143 addresses or IP subnets that allows for easy manipulations. Version
144 4.xx of NetAddr::IP will work with older versions of Perl and is
145 compatible with Math::BigInt.
146 The internal representation of all IP objects is in 128 bit IPv6
148 notation. IPv4 and IPv6 objects may be freely mixed.
149 Overloaded Operators
151 Many operators have been overloaded, as described below:
152 Assignment ("=")
154 Has been optimized to copy one NetAddr::IP object to another very
155 quickly.
156 "->copy()"
158 The assignment ("=") operation is only put in to operation when the
159 copied object is further mutated by another overloaded operation.
160 See overload SPECIAL SYMBOLS FOR "use overload" for details.
161 "->copy()" actually creates a new object when called.
163 Stringification
165 An object can be used just as a string. For instance, the following
166 code
167 my $ip = new NetAddr::IP '192.168.1.123';
169 print "$ip\n";
170 Will print the string 192.168.1.123/32.
172 Equality
174 You can test for equality with either "eq" or "==". "eq" allows
175 comparison with arbitrary strings as well as NetAddr::IP objects.
176 The following example:
177 if (NetAddr::IP->new('127.0.0.1','255.0.0.0') eq '127.0.0.1/8')
179 { print "Yes\n"; }
180 will print out "Yes".
182 Comparison with "==" requires both operands to be NetAddr::IP
184 objects.
185 In both cases, a true value is returned if the CIDR representation
187 of the operands is equal.
188 Comparison via >, <, >=, <=, <=> and "cmp"
190 Internally, all network objects are represented in 128 bit format.
191 The numeric representation of the network is compared through the
192 corresponding operation. Comparisons are tried first on the address
193 portion of the object and if that is equal then the NUMERIC cidr
194 portion of the masks are compared. This leads to the
195 counterintuitive result that
196 /24 > /16
198 Comparison should not be done on netaddr objects with different
200 CIDR as this may produce indeterminate - unexpected results, rather
201 the determination of which netblock is larger or smaller should be
202 done by comparing
203 $ip1->masklen <=> $ip2->masklen
205 Addition of a constant ("+")
207 Add a 32 bit signed constant to the address part of a NetAddr
208 object. This operation changes the address part to point so many
209 hosts above the current objects start address. For instance, this
210 code:
211 print NetAddr::IP->new('127.0.0.1/8') + 5;
213 will output 127.0.0.6/8. The address will wrap around at the
215 broadcast back to the network address. This code:
216 print NetAddr::IP->new('10.0.0.1/24') + 255;
218 outputs 10.0.0.0/24.
220 Returns the the unchanged object when the constant is missing or
222 out of range.
223 2147483647 <= constant >= -2147483648
225 Subtraction of a constant ("-")
227 The complement of the addition of a constant.
228 Difference ("-")
230 Returns the difference between the address parts of two NetAddr::IP
231 objects address parts as a 32 bit signed number.
232 Returns undef if the difference is out of range.
234 (See range restrictions on Addition above)
236 Auto-increment
238 Auto-incrementing a NetAddr::IP object causes the address part to
239 be adjusted to the next host address within the subnet. It will
240 wrap at the broadcast address and start again from the network
241 address.
242 Auto-decrement
244 Auto-decrementing a NetAddr::IP object performs exactly the
245 opposite of auto-incrementing it, as you would expect.
246 Serializing and Deserializing
248 This module defines hooks to collaborate with Storable for serializing
249 "NetAddr::IP" objects, through compact and human readable strings. You
250 can revert to the old format by invoking this module as
251 use NetAddr::IP ':old_storable';
253 You must do this if you have legacy data files containing NetAddr::IP
255 objects stored using the Storable module.
256 Methods
258 "->new([$addr, [ $mask|IPv6 ]])"
259 "->new6([$addr, [ $mask]])"
260 "->new_no([$addr, [ $mask]])"
261 "->new_from_aton($netaddr)"
262 new_cis and new_cis6 are DEPRECATED
263 "->new_cis("$addr $mask)"
264 "->new_cis6("$addr $mask)"
265 The first two methods create a new address with the supplied
266 address in $addr and an optional netmask $mask, which can be
267 omitted to get a /32 or /128 netmask for IPv4 / IPv6 addresses
268 respectively.
269 The third method "new_no" is exclusively for IPv4 addresses and
271 filters improperly formatted dot quad strings for leading 0's that
272 would normally be interpreted as octal format by NetAddr per the
273 specifications for inet_aton.
274 new_from_aton takes a packed IPv4 address and assumes a /32 mask.
276 This function replaces the DEPRECATED :aton functionality which is
277 fundamentally broken.
278 The last two methods new_cis and new_cis6 differ from new and new6
280 only in that they except the common Cisco address notation for
281 address/mask pairs with a space as a separator instead of a slash
282 (/)
283 These methods are DEPRECATED because the functionality is now
285 included in the other "new" methods
286 i.e. ->new_cis('1.2.3.0 24')
288 or
289 ->new_cis6('::1.2.3.0 120')
290 "->new6" and "->new_cis6" mark the address as being in ipV6 address
292 space even if the format would suggest otherwise.
293 i.e. ->new6('1.2.3.4') will result in ::102:304
295 addresses submitted to ->new in ipV6 notation will
297 remain in that notation permanently. i.e.
298 ->new('::1.2.3.4') will result in ::102:304
299 whereas new('1.2.3.4') would print out as 1.2.3.4
300 See "STRINGIFICATION" below.
302 $addr can be almost anything that can be resolved to an IP address
304 in all the notations I have seen over time. It can optionally
305 contain the mask in CIDR notation.
306 prefix notation is understood, with the limitation that the range
308 specified by the prefix must match with a valid subnet.
309 Addresses in the same format returned by "inet_aton" or
311 "gethostbyname" can also be understood, although no mask can be
312 specified for them. The default is to not attempt to recognize this
313 format, as it seems to be seldom used.
314 To accept addresses in that format, invoke the module as in
316 use NetAddr::IP ':aton'
318 If called with no arguments, 'default' is assumed.
320 If called with an empty string as the argument, returns 'undef'
322 $addr can be any of the following and possibly more...
324 n.n
326 n.n/mm
327 n.n.n
328 n.n.n/mm
329 n.n.n.n
330 n.n.n.n/mm 32 bit cidr notation
331 n.n.n.n/m.m.m.m
332 loopback, localhost, broadcast, any, default
333 x.x.x.x/host
334 0xABCDEF, 0b111111000101011110, (a bcd number)
335 a netaddr as returned by 'inet_aton'
336 Any RFC1884 notation
338 ::n.n.n.n
340 ::n.n.n.n/mmm 128 bit cidr notation
341 ::n.n.n.n/::m.m.m.m
342 ::x:x
343 ::x:x/mmm
344 x:x:x:x:x:x:x:x
345 x:x:x:x:x:x:x:x/mmm
346 x:x:x:x:x:x:x:x/m:m:m:m:m:m:m:m any RFC1884 notation
347 loopback, localhost, unspecified, any, default
348 ::x:x/host
349 0xABCDEF, 0b111111000101011110 within the limits
350 of perl's number resolution
351 123456789012 a 'big' bcd number (bigger than perl likes)
352 and Math::BigInt
353 A Fully Qualified Domain Name which returns an ipV4 address or an
355 ipV6 address, embodied in that order. This previously undocumented
356 feature may be disabled with:
357 use NetAddr::IP::Lite ':nofqdn';
359 If called with no arguments, 'default' is assumed.
361 If called with an empty string as the argument, returns 'undef'
363 "->broadcast()"
365 Returns a new object referring to the broadcast address of a given
366 subnet. The broadcast address has all ones in all the bit positions
367 where the netmask has zero bits. This is normally used to address
368 all the hosts in a given subnet.
369 "->network()"
371 Returns a new object referring to the network address of a given
372 subnet. A network address has all zero bits where the bits of the
373 netmask are zero. Normally this is used to refer to a subnet.
374 "->addr()"
376 Returns a scalar with the address part of the object as an IPv4 or
377 IPv6 text string as appropriate. This is useful for printing or for
378 passing the address part of the NetAddr::IP object to other
379 components that expect an IP address. If the object is an ipV6
380 address or was created using ->new6($ip) it will be reported in
381 ipV6 hex format otherwise it will be reported in dot quad format
382 only if it resides in ipV4 address space.
383 "->mask()"
385 Returns a scalar with the mask as an IPv4 or IPv6 text string as
386 described above.
387 "->masklen()"
389 Returns a scalar the number of one bits in the mask.
390 "->bits()"
392 Returns the width of the address in bits. Normally 32 for v4 and
393 128 for v6.
394 "->version()"
396 Returns the version of the address or subnet. Currently this can be
397 either 4 or 6.
398 "->cidr()"
400 Returns a scalar with the address and mask in CIDR notation. A
401 NetAddr::IP object stringifies to the result of this function.
402 (see comments about ->new6() and ->addr() for output formats)
403 "->aton()"
405 Returns the address part of the NetAddr::IP object in the same
406 format as the inet_aton() or "ipv6_aton" function respectively. If
407 the object was created using ->new6($ip), the address returned will
408 always be in ipV6 format, even for addresses in ipV4 address space.
409 "->range()"
411 Returns a scalar with the base address and the broadcast address
412 separated by a dash and spaces. This is called range notation.
413 "->prefix()"
415 Returns a scalar with the address and mask in ipV4 prefix
416 representation. This is useful for some programs, which expect its
417 input to be in this format. This method will include the broadcast
418 address in the encoding.
419 "->nprefix()"
421 Just as "->prefix()", but does not include the broadcast address.
422 "->numeric()"
424 When called in a scalar context, will return a numeric
425 representation of the address part of the IP address. When called
426 in an array contest, it returns a list of two elements. The first
427 element is as described, the second element is the numeric
428 representation of the netmask.
429 This method is essential for serializing the representation of a
431 subnet.
432 "->bigint()"
434 When called in scalar context, will return a Math::BigInt
435 representation of the address part of the IP address. When called
436 in an array context, it returns a list of two elements, The first
437 element is as described, the second element is the Math::BigInt
438 representation of the netmask.
439 "->wildcard()"
441 When called in a scalar context, returns the wildcard bits
442 corresponding to the mask, in dotted-quad or ipV6 format as
443 applicable.
444 When called in an array context, returns a two-element array. The
446 first element, is the address part. The second element, is the
447 wildcard translation of the mask.
448 "->short()"
450 Returns the address part in a short or compact notation.
451 (ie, 127.0.0.1 becomes 127.1).
453 Works with both, V4 and V6.
455 "->canon()"
457 Returns the address part in canonical notation as a string. For
458 ipV4, this is dotted quad, and is the same as the return value from
459 "->addr()". For ipV6 it is as per RFC5952, and is the same as the
460 LOWER CASE value returned by "->short()".
461 "->full()"
463 Returns the address part in FULL notation for ipV4 and ipV6
464 respectively.
465 i.e. for ipV4
467 0000:0000:0000:0000:0000:0000:127.0.0.1
468 for ipV6
470 0000:0000:0000:0000:0000:0000:0000:0000
471 To force ipV4 addresses into full ipV6 format use:
473 "->full6()"
475 Returns the address part in FULL ipV6 notation
476 "->full6m()"
478 Returns the mask part in FULL ipV6 notation
479 "$me->contains($other)"
481 Returns true when $me completely contains $other. False is returned
482 otherwise and "undef" is returned if $me and $other are not both
483 "NetAddr::IP" objects.
484 "$me->within($other)"
486 The complement of "->contains()". Returns true when $me is
487 completely contained within $other.
488 Note that $me and $other must be "NetAddr::IP" objects.
490 C->is_rfc1918()>
492 Returns true when $me is an RFC 1918 address.
493 10.0.0.0 - 10.255.255.255 (10/8 prefix)
495 172.16.0.0 - 172.31.255.255 (172.16/12 prefix)
496 192.168.0.0 - 192.168.255.255 (192.168/16 prefix)
497 "->is_local()"
499 Returns true when $me is a local network address.
500 i.e. ipV4 127.0.0.0 - 127.255.255.255
502 or ipV6 === ::1
503 "->splitref($bits,[optional $bits1,$bits2,...])"
505 Returns a reference to a list of objects, representing subnets of
506 "bits" mask produced by splitting the original object, which is
507 left unchanged. Note that $bits must be longer than the original
508 mask in order for it to be splittable.
509 ERROR conditions:
511 ->splitref will DIE with the message 'netlimit exceeded'
513 if the number of return objects exceeds 'netlimit'.
514 See function 'netlimit' above (default 2**16 or 65536 nets).
515 ->splitref returns undef when C<bits> or the (bits list)
517 will not fit within the original object.
518 ->splitref returns undef if a supplied ipV4, ipV6, or NetAddr
520 mask in inappropriately formatted,
521 bits may be a CIDR mask, a dot quad or ipV6 string or a NetAddr::IP
523 object. If "bits" is missing, the object is split for into all
524 available addresses within the ipV4 or ipV6 object ( auto-mask of
525 CIDR 32, 128 respectively ).
526 With optional additional "bits" list, the original object is split
528 into parts sized based on the list. NOTE: a short list will
529 replicate the last item. If the last item is too large to for what
530 remains of the object after splitting off the first parts of the
531 list, a "best fits" list of remaining objects will be returned
532 based on an increasing sort of the CIDR values of the "bits" list.
533 i.e. my $ip = new NetAddr::IP('192.168.0.0/24');
535 my $objptr = $ip->split(28, 29, 28, 29, 26);
536 has split plan 28 29 28 29 26 26 26 28
538 and returns this list of objects
539 192.168.0.0/28
541 192.168.0.16/29
542 192.168.0.24/28
543 192.168.0.40/29
544 192.168.0.48/26
545 192.168.0.112/26
546 192.168.0.176/26
547 192.168.0.240/28
548 NOTE: that /26 replicates twice beyond the original request and /28
550 fills the remaining return object requirement.
551 "->rsplitref($bits,[optional $bits1,$bits2,...])"
553 "->rsplitref" is the same as "->splitref" above except that the
554 split plan is applied to the original object in reverse order.
555 i.e. my $ip = new NetAddr::IP('192.168.0.0/24');
557 my @objects = $ip->split(28, 29, 28, 29, 26);
558 has split plan 28 26 26 26 29 28 29 28
560 and returns this list of objects
561 192.168.0.0/28
563 192.168.0.16/26
564 192.168.0.80/26
565 192.168.0.144/26
566 192.168.0.208/29
567 192.168.0.216/28
568 192.168.0.232/29
569 192.168.0.240/28
570 "->split($bits,[optional $bits1,$bits2,...])"
572 Similar to "->splitref" above but returns the list rather than a
573 list reference. You may not want to use this if a large number of
574 objects is expected.
575 "->rsplit($bits,[optional $bits1,$bits2,...])"
577 Similar to "->rsplitref" above but returns the list rather than a
578 list reference. You may not want to use this if a large number of
579 objects is expected.
580 "->hostenum()"
582 Returns the list of hosts within a subnet.
583 ERROR conditions:
585 ->hostenum will DIE with the message 'netlimit exceeded'
587 if the number of return objects exceeds 'netlimit'.
588 See function 'netlimit' above (default 2**16 or 65536 nets).
589 "->hostenumref()"
591 Faster version of "->hostenum()", returning a reference to a list.
592 NOTE: hostenum and hostenumref report zero (0) useable hosts in a
594 /31 network. This is the behavior expected prior to RFC 3021. To
595 report 2 useable hosts for use in point-to-point networks, use
596 :rfc3021 tag.
597 use NetAddr::IP qw(:rfc3021);
599 This will cause hostenum and hostenumref to return two (2) useable
601 hosts in a /31 network.
602 "$me->compact($addr1, $addr2, ...)"
604 "@compacted_object_list = Compact(@object_list)"
605 Given a list of objects (including $me), this method will compact
606 all the addresses and subnets into the largest (ie, least specific)
607 subnets possible that contain exactly all of the given objects.
608 Note that in versions prior to 3.02, if fed with the same IP
610 subnets multiple times, these subnets would be returned. From 3.02
611 on, a more "correct" approach has been adopted and only one address
612 would be returned.
613 Note that $me and all $addr's must be "NetAddr::IP" objects.
615 "$me->compactref(\@list)"
617 "$compacted_object_list = Compact(\@list)"
618 As usual, a faster version of "->compact()" that returns a
619 reference to a list. Note that this method takes a reference to a
620 list instead.
621 Note that $me must be a "NetAddr::IP" object.
623 "$me->coalesce($masklen, $number, @list_of_subnets)"
625 "$arrayref = Coalesce($masklen,$number,@list_of_subnets)"
626 Will return a reference to list of "NetAddr::IP" subnets of
627 $masklen mask length, when $number or more addresses from
628 @list_of_subnets are found to be contained in said subnet.
629 Subnets from @list_of_subnets with a mask shorter than $masklen are
631 passed "as is" to the return list.
632 Subnets from @list_of_subnets with a mask longer than $masklen will
634 be counted (actually, the number of IP addresses is counted)
635 towards $number.
636 Called as a method, the array will include $me.
638 WARNING: the list of subnet must be the same type. i.e ipV4 or ipV6
640 "->first()"
642 Returns a new object representing the first usable IP address
643 within the subnet (ie, the first host address).
644 "->last()"
646 Returns a new object representing the last usable IP address within
647 the subnet (ie, one less than the broadcast address).
648 "->nth($index)"
650 Returns a new object representing the n-th usable IP address within
651 the subnet (ie, the n-th host address). If no address is available
652 (for example, when the network is too small for $index hosts),
653 "undef" is returned.
654 Version 4.00 of NetAddr::IP and version 1.00 of NetAddr::IP::Lite
656 implements "->nth($index)" and "->num()" exactly as the
657 documentation states. Previous versions behaved slightly
658 differently and not in a consistent manner. See the README file for
659 details.
660 To use the old behavior for "->nth($index)" and "->num()":
662 use NetAddr::IP::Lite qw(:old_nth);
664 old behavior:
666 NetAddr::IP->new('10/32')->nth(0) == undef
667 NetAddr::IP->new('10/32')->nth(1) == undef
668 NetAddr::IP->new('10/31')->nth(0) == undef
669 NetAddr::IP->new('10/31')->nth(1) == 10.0.0.1/31
670 NetAddr::IP->new('10/30')->nth(0) == undef
671 NetAddr::IP->new('10/30')->nth(1) == 10.0.0.1/30
672 NetAddr::IP->new('10/30')->nth(2) == 10.0.0.2/30
673 NetAddr::IP->new('10/30')->nth(3) == 10.0.0.3/30
674 Note that in each case, the broadcast address is represented in the
676 output set and that the 'zero'th index is alway undef except for a
677 point-to-point /31 or /127 network where there are exactly two
678 addresses in the network.
679 new behavior:
681 NetAddr::IP->new('10/32')->nth(0) == 10.0.0.0/32
682 NetAddr::IP->new('10.1/32'->nth(0) == 10.0.0.1/32
683 NetAddr::IP->new('10/31')->nth(0) == 10.0.0.0/31
684 NetAddr::IP->new('10/31')->nth(1) == 10.0.0.1/31
685 NetAddr::IP->new('10/30')->nth(0) == 10.0.0.1/30
686 NetAddr::IP->new('10/30')->nth(1) == 10.0.0.2/30
687 NetAddr::IP->new('10/30')->nth(2) == undef
688 Note that a /32 net always has 1 usable address while a /31 has
690 exactly two usable addresses for point-to-point addressing. The
691 first index (0) returns the address immediately following the
692 network address except for a /31 or /127 when it return the network
693 address.
694 "->num()"
696 As of version 4.42 of NetAddr::IP and version 1.27 of
697 NetAddr::IP::Lite a /31 and /127 with return a net num value of 2
698 instead of 0 (zero) for point-to-point networks.
699 Version 4.00 of NetAddr::IP and version 1.00 of NetAddr::IP::Lite
701 return the number of usable IP addresses within the subnet, not
702 counting the broadcast or network address.
703 Previous versions worked only for ipV4 addresses, returned a
705 maximum span of 2**32 and returned the number of IP addresses not
706 counting the broadcast address.
707 (one greater than the new behavior)
708 To use the old behavior for "->nth($index)" and "->num()":
710 use NetAddr::IP::Lite qw(:old_nth);
712 WARNING:
714 NetAddr::IP will calculate and return a numeric string for network
716 ranges as large as 2**128. These values are TEXT strings and perl
717 can treat them as integers for numeric calculations.
718 Perl on 32 bit platforms only handles integer numbers up to 2**32
720 and on 64 bit platforms to 2**64.
721 If you wish to manipulate numeric strings returned by NetAddr::IP
723 that are larger than 2**32 or 2**64, respectively, you must load
724 additional modules such as Math::BigInt, bignum or some similar
725 package to do the integer math.
726 "->re()"
728 Returns a Perl regular expression that will match an IP address
729 within the given subnet. Defaults to ipV4 notation. Will return an
730 ipV6 regex if the address in not in ipV4 space.
731 "->re6()"
733 Returns a Perl regular expression that will match an IP address
734 within the given subnet. Always returns an ipV6 regex.
735
737 Compact
738 Coalesce
739 Zeros
740 Ones
741 V4mask
742 V4net
743 netlimit
744
746 NetAddr::IP only runs in Pure Perl mode on Windows boxes because I
747 don't have the resources or know how to get the "configure" stuff
748 working in the Windows environment. Volunteers WELCOME to port the "C"
749 portion of this module to Windows.
750
752 See the Changes file
753
755 Luis E. Muñoz <luismunoz@cpan.org>, Michael Robinton
756 <michael@bizsystems.com>
757
759 This software comes with the same warranty as Perl itself (ie, none),
760 so by using it you accept any and all the liability.
761
763 This software is (c) Luis E. Muñoz, 1999 - 2007, and (c) Michael
764 Robinton, 2006 - 2014.
765 All rights reserved.
767 This program is free software; you can redistribute it and/or modify it
769 under the terms of either:
770 a) the GNU General Public License as published by the Free
772 Software Foundation; either version 2, or (at your option) any
773 later version, or
774 b) the "Artistic License" which comes with this distribution.
776 This program is distributed in the hope that it will be useful, but
778 WITHOUT ANY WARRANTY; without even the implied warranty of
779 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either the
780 GNU General Public License or the Artistic License for more details.
781 You should have received a copy of the Artistic License with this
783 distribution, in the file named "Artistic". If not, I'll be glad to
784 provide one.
785 You should also have received a copy of the GNU General Public License
787 along with this program in the file named "Copying". If not, write to
788 the
789 Free Software Foundation, Inc.
791 51 Franklin Street, Fifth Floor
792 Boston, MA 02110-1301 USA.
793 or visit their web page on the internet at:
795 http://www.gnu.org/copyleft/gpl.html.
797
799 perl(1) L<NetAddr::IP::Lite>, L<NetAddr::IP::Util>,
800 L<NetAddr::IP::InetBase>
801perl v5.38.0 2023-07-21 IP(3)