1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
|
.. BSD LICENSE
Copyright(c) 2016 Intel Corporation. All rights reserved.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of Intel Corporation nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
IPsec Security Gateway Sample Application
=========================================
The IPsec Security Gateway application is an example of a "real world"
application using DPDK cryptodev framework.
Overview
--------
The application demonstrates the implementation of a Security Gateway
(not IPsec compliant, see the Constraints section below) using DPDK based on RFC4301,
RFC4303, RFC3602 and RFC2404.
Internet Key Exchange (IKE) is not implemented, so only manual setting of
Security Policies and Security Associations is supported.
The Security Policies (SP) are implemented as ACL rules, the Security
Associations (SA) are stored in a table and the routing is implemented
using LPM.
The application classifies the ports as *Protected* and *Unprotected*.
Thus, traffic received on an Unprotected or Protected port is consider
Inbound or Outbound respectively.
The Path for IPsec Inbound traffic is:
* Read packets from the port.
* Classify packets between IPv4 and ESP.
* Perform Inbound SA lookup for ESP packets based on their SPI.
* Perform Verification/Decryption.
* Remove ESP and outer IP header
* Inbound SP check using ACL of decrypted packets and any other IPv4 packets.
* Routing.
* Write packet to port.
The Path for the IPsec Outbound traffic is:
* Read packets from the port.
* Perform Outbound SP check using ACL of all IPv4 traffic.
* Perform Outbound SA lookup for packets that need IPsec protection.
* Add ESP and outer IP header.
* Perform Encryption/Digest.
* Routing.
* Write packet to port.
Constraints
-----------
* No IPv6 options headers.
* No AH mode.
* Currently only EAS-CBC, HMAC-SHA1 and NULL.
* Each SA must be handle by a unique lcore (*1 RX queue per port*).
* No chained mbufs.
Compiling the Application
-------------------------
To compile the application:
#. Go to the sample application directory::
export RTE_SDK=/path/to/rte_sdk
cd ${RTE_SDK}/examples/ipsec-secgw
#. Set the target (a default target is used if not specified). For example::
export RTE_TARGET=x86_64-native-linuxapp-gcc
See the *DPDK Getting Started Guide* for possible RTE_TARGET values.
#. Build the application::
make
#. [Optional] Build the application for debugging:
This option adds some extra flags, disables compiler optimizations and
is verbose::
make DEBUG=1
Running the Application
-----------------------
The application has a number of command line options::
./build/ipsec-secgw [EAL options] --
-p PORTMASK -P -u PORTMASK
--config (port,queue,lcore)[,(port,queue,lcore]
--single-sa SAIDX
--ep0|--ep1
Where:
* ``-p PORTMASK``: Hexadecimal bitmask of ports to configure.
* ``-P``: *optional*. Sets all ports to promiscuous mode so that packets are
accepted regardless of the packet's Ethernet MAC destination address.
Without this option, only packets with the Ethernet MAC destination address
set to the Ethernet address of the port are accepted (default is enabled).
* ``-u PORTMASK``: hexadecimal bitmask of unprotected ports
* ``--config (port,queue,lcore)[,(port,queue,lcore)]``: determines which queues
from which ports are mapped to which cores.
* ``--single-sa SAIDX``: use a single SA for outbound traffic, bypassing the SP
on both Inbound and Outbound. This option is meant for debugging/performance
purposes.
* ``--ep0``: configure the app as Endpoint 0.
* ``--ep1``: configure the app as Endpoint 1.
Either one of ``--ep0`` or ``--ep1`` **must** be specified.
The main purpose of these options is to easily configure two systems
back-to-back that would forward traffic through an IPsec tunnel (see
:ref:`figure_ipsec_endpoints`).
The mapping of lcores to port/queues is similar to other l3fwd applications.
For example, given the following command line::
./build/ipsec-secgw -l 20,21 -n 4 --socket-mem 0,2048 \
--vdev "cryptodev_null_pmd" -- -p 0xf -P -u 0x3 \
--config="(0,0,20),(1,0,20),(2,0,21),(3,0,21)" --ep0 \
where each options means:
* The ``-l`` option enables cores 20 and 21.
* The ``-n`` option sets memory 4 channels.
* The ``--socket-mem`` to use 2GB on socket 1.
* The ``--vdev "cryptodev_null_pmd"`` option creates virtual NULL cryptodev PMD.
* The ``-p`` option enables ports (detected) 0, 1, 2 and 3.
* The ``-P`` option enables promiscuous mode.
* The ``-u`` option sets ports 1 and 2 as unprotected, leaving 2 and 3 as protected.
* The ``--config`` option enables one queue per port with the following mapping:
+----------+-----------+-----------+---------------------------------------+
| **Port** | **Queue** | **lcore** | **Description** |
| | | | |
+----------+-----------+-----------+---------------------------------------+
| 0 | 0 | 20 | Map queue 0 from port 0 to lcore 20. |
| | | | |
+----------+-----------+-----------+---------------------------------------+
| 1 | 0 | 20 | Map queue 0 from port 1 to lcore 20. |
| | | | |
+----------+-----------+-----------+---------------------------------------+
| 2 | 0 | 21 | Map queue 0 from port 2 to lcore 21. |
| | | | |
+----------+-----------+-----------+---------------------------------------+
| 3 | 0 | 21 | Map queue 0 from port 3 to lcore 21. |
| | | | |
+----------+-----------+-----------+---------------------------------------+
* The ``--ep0`` options configures the app with a given set of SP, SA and Routing
entries as explained below in more detail.
Refer to the *DPDK Getting Started Guide* for general information on running
applications and the Environment Abstraction Layer (EAL) options.
The application would do a best effort to "map" crypto devices to cores, with
hardware devices having priority. Basically, hardware devices if present would
be assigned to a core before software ones.
This means that if the application is using a single core and both hardware
and software crypto devices are detected, hardware devices will be used.
A way to achieve the case where you want to force the use of virtual crypto
devices is to whitelist the Ethernet devices needed and therefore implicitly
blacklisting all hardware crypto devices.
For example, something like the following command line:
.. code-block:: console
./build/ipsec-secgw -l 20,21 -n 4 --socket-mem 0,2048 \
-w 81:00.0 -w 81:00.1 -w 81:00.2 -w 81:00.3 \
--vdev "cryptodev_aesni_mb_pmd" --vdev "cryptodev_null_pmd" \
-- \
-p 0xf -P -u 0x3 --config="(0,0,20),(1,0,20),(2,0,21),(3,0,21)" \
--ep0
Configurations
--------------
The following sections provide some details on the default values used to
initialize the SP, SA and Routing tables.
Currently all configuration information is hard coded into the application.
The following image illustrate a few of the concepts regarding IPSec, such
as protected/unprotected and inbound/outbound traffic, from the point of
view of two back-to-back endpoints:
.. _figure_ipsec_endpoints:
.. figure:: img/ipsec_endpoints.*
IPSec Inbound/Outbound traffic
Note that the above image only displays unidirectional traffic per port
for illustration purposes.
The application supports bidirectional traffic on all ports,
Security Policy Initialization
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
As mention in the overview, the Security Policies are ACL rules.
The application defines two ACLs, one each of Inbound and Outbound, and
it replicates them per socket in use.
Following are the default rules which show only the relevant information,
assuming ANY value is valid for the fields not mentioned (src ip, proto,
src/dst ports).
.. _table_ipsec_endpoint_outbound_sp:
.. table:: Endpoint 0 Outbound Security Policies
+-----------------------------------+------------+
| **Dst** | **SA idx** |
| | |
+-----------------------------------+------------+
| 192.168.105.0/24 | 5 |
| | |
+-----------------------------------+------------+
| 192.168.106.0/24 | 6 |
| | |
+-----------------------------------+------------+
| 192.168.175.0/24 | 10 |
| | |
+-----------------------------------+------------+
| 192.168.176.0/24 | 11 |
| | |
+-----------------------------------+------------+
| 192.168.200.0/24 | 15 |
| | |
+-----------------------------------+------------+
| 192.168.201.0/24 | 16 |
| | |
+-----------------------------------+------------+
| 192.168.55.0/24 | 25 |
| | |
+-----------------------------------+------------+
| 192.168.56.0/24 | 26 |
| | |
+-----------------------------------+------------+
| 192.168.240.0/24 | BYPASS |
| | |
+-----------------------------------+------------+
| 192.168.241.0/24 | BYPASS |
| | |
+-----------------------------------+------------+
| 0:0:0:0:5555:5555:0:0/96 | 5 |
| | |
+-----------------------------------+------------+
| 0:0:0:0:6666:6666:0:0/96 | 6 |
| | |
+-----------------------------------+------------+
| 0:0:1111:1111:0:0:0:0/96 | 10 |
| | |
+-----------------------------------+------------+
| 0:0:1111:1111:1111:1111:0:0/96 | 11 |
| | |
+-----------------------------------+------------+
| 0:0:0:0:aaaa:aaaa:0:0/96 | 25 |
| | |
+-----------------------------------+------------+
| 0:0:0:0:bbbb:bbbb:0:0/96 | 26 |
| | |
+-----------------------------------+------------+
.. _table_ipsec_endpoint_inbound_sp:
.. table:: Endpoint 0 Inbound Security Policies
+-----------------------------------+------------+
| **Dst** | **SA idx** |
| | |
+-----------------------------------+------------+
| 192.168.115.0/24 | 105 |
| | |
+-----------------------------------+------------+
| 192.168.116.0/24 | 106 |
| | |
+-----------------------------------+------------+
| 192.168.185.0/24 | 110 |
| | |
+-----------------------------------+------------+
| 192.168.186.0/24 | 111 |
| | |
+-----------------------------------+------------+
| 192.168.210.0/24 | 115 |
| | |
+-----------------------------------+------------+
| 192.168.211.0/24 | 116 |
| | |
+-----------------------------------+------------+
| 192.168.65.0/24 | 125 |
| | |
+-----------------------------------+------------+
| 192.168.66.0/24 | 126 |
| | |
+-----------------------------------+------------+
| 192.168.245.0/24 | BYPASS |
| | |
+-----------------------------------+------------+
| 192.168.246.0/24 | BYPASS |
| | |
+-----------------------------------+------------+
| ffff:0:0:0:5555:5555:0:0/96 | 105 |
| | |
+-----------------------------------+------------+
| ffff:0:0:0:6666:6666:0:0/96 | 106 |
| | |
+-----------------------------------+------------+
| ffff:0:1111:1111:0:0:0:0/96 | 110 |
| | |
+-----------------------------------+------------+
| ffff:0:1111:1111:1111:1111:0:0/96 | 111 |
| | |
+-----------------------------------+------------+
| ffff:0:0:0:aaaa:aaaa:0:0/96 | 125 |
| | |
+-----------------------------------+------------+
| ffff:0:0:0:bbbb:bbbb:0:0/96 | 126 |
| | |
+-----------------------------------+------------+
For Endpoint 1, we use the same policies in reverse, meaning the Inbound SP
entries are set as Outbound and vice versa.
Security Association Initialization
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The SAs are kept in a array table.
For Inbound, the SPI is used as index modulo the table size.
This means that on a table for 100 SA, SPI 5 and 105 would use the same index
and that is not currently supported.
Notice that it is not an issue for Outbound traffic as we store the index and
not the SPI in the Security Policy.
All SAs configured with AES-CBC and HMAC-SHA1 share the same values for cipher
block size and key, and authentication digest size and key.
The following are the default values:
.. _table_ipsec_endpoint_outbound_sa:
.. table:: Endpoint 0 Outbound Security Associations
+---------+----------+------------+-----------+----------------+----------------+
| **SPI** | **Mode** | **Cipher** | **Auth** | **Tunnel src** | **Tunnel dst** |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 5 | Tunnel | AES-CBC | HMAC-SHA1 | 172.16.1.5 | 172.16.2.5 |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 6 | Tunnel | AES-CBC | HMAC-SHA1 | 172.16.1.6 | 172.16.2.6 |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 10 | Trans | AES-CBC | HMAC-SHA1 | N/A | N/A |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 11 | Trans | AES-CBC | HMAC-SHA1 | N/A | N/A |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 15 | Tunnel | NULL | NULL | 172.16.1.5 | 172.16.2.5 |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 16 | Tunnel | NULL | NULL | 172.16.1.6 | 172.16.2.6 |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 25 | Tunnel | AES-CBC | HMAC-SHA1 | 1111:1111: | 2222:2222: |
| | | | | 1111:1111: | 2222:2222: |
| | | | | 1111:1111: | 2222:2222: |
| | | | | 1111:5555 | 2222:5555 |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 26 | Tunnel | AES-CBC | HMAC-SHA1 | 1111:1111: | 2222:2222: |
| | | | | 1111:1111: | 2222:2222: |
| | | | | 1111:1111: | 2222:2222: |
| | | | | 1111:6666 | 2222:6666 |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
.. _table_ipsec_endpoint_inbound_sa:
.. table:: Endpoint 0 Inbound Security Associations
+---------+----------+------------+-----------+----------------+----------------+
| **SPI** | **Mode** | **Cipher** | **Auth** | **Tunnel src** | **Tunnel dst** |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 105 | Tunnel | AES-CBC | HMAC-SHA1 | 172.16.2.5 | 172.16.1.5 |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 106 | Tunnel | AES-CBC | HMAC-SHA1 | 172.16.2.6 | 172.16.1.6 |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 110 | Trans | AES-CBC | HMAC-SHA1 | N/A | N/A |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 111 | Trans | AES-CBC | HMAC-SHA1 | N/A | N/A |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 115 | Tunnel | NULL | NULL | 172.16.2.5 | 172.16.1.5 |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 116 | Tunnel | NULL | NULL | 172.16.2.6 | 172.16.1.6 |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 125 | Tunnel | AES-CBC | HMAC-SHA1 | 2222:2222: | 1111:1111: |
| | | | | 2222:2222: | 1111:1111: |
| | | | | 2222:2222: | 1111:1111: |
| | | | | 2222:5555 | 1111:5555 |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
| 126 | Tunnel | AES-CBC | HMAC-SHA1 | 2222:2222: | 1111:1111: |
| | | | | 2222:2222: | 1111:1111: |
| | | | | 2222:2222: | 1111:1111: |
| | | | | 2222:6666 | 1111:6666 |
| | | | | | |
+---------+----------+------------+-----------+----------------+----------------+
For Endpoint 1, we use the same policies in reverse, meaning the Inbound SP
entries are set as Outbound and vice versa.
Routing Initialization
~~~~~~~~~~~~~~~~~~~~~~
The Routing is implemented using an LPM table.
Following default values:
.. _table_ipsec_endpoint_outbound_routing:
.. table:: Endpoint 0 Routing Table
+------------------+----------+
| **Dst addr** | **Port** |
| | |
+------------------+----------+
| 172.16.2.5/32 | 0 |
| | |
+------------------+----------+
| 172.16.2.6/32 | 1 |
| | |
+------------------+----------+
| 192.168.175.0/24 | 0 |
| | |
+------------------+----------+
| 192.168.176.0/24 | 1 |
| | |
+------------------+----------+
| 192.168.240.0/24 | 0 |
| | |
+------------------+----------+
| 192.168.241.0/24 | 1 |
| | |
+------------------+----------+
| 192.168.115.0/24 | 2 |
| | |
+------------------+----------+
| 192.168.116.0/24 | 3 |
| | |
+------------------+----------+
| 192.168.65.0/24 | 2 |
| | |
+------------------+----------+
| 192.168.66.0/24 | 3 |
| | |
+------------------+----------+
| 192.168.185.0/24 | 2 |
| | |
+------------------+----------+
| 192.168.186.0/24 | 3 |
| | |
+------------------+----------+
| 192.168.210.0/24 | 2 |
| | |
+------------------+----------+
| 192.168.211.0/24 | 3 |
| | |
+------------------+----------+
| 192.168.245.0/24 | 2 |
| | |
+------------------+----------+
| 192.168.246.0/24 | 3 |
| | |
+------------------+----------+
| 2222:2222: | 0 |
| 2222:2222: | |
| 2222:2222: | |
| 2222:5555/116 | |
| | |
+------------------+----------+
| 2222:2222: | 1 |
| 2222:2222: | |
| 2222:2222: | |
| 2222:6666/116 | |
| | |
+------------------+----------+
| 0000:0000: | 0 |
| 1111:1111: | |
| 0000:0000: | |
| 0000:0000/116 | |
| | |
+------------------+----------+
| 0000:0000: | 1 |
| 1111:1111: | |
| 1111:1111: | |
| 0000:0000/116 | |
| | |
+------------------+----------+
| ffff:0000: | 2 |
| 0000:0000: | |
| aaaa:aaaa: | |
| 0000:0/116 | |
| | |
+------------------+----------+
| ffff:0000: | 3 |
| 0000:0000: | |
| bbbb:bbbb: | |
| 0000:0/116 | |
| | |
+------------------+----------+
| ffff:0000: | 2 |
| 0000:0000: | |
| 5555:5555: | |
| 0000:0/116 | |
| | |
+------------------+----------+
| ffff:0000: | 3 |
| 0000:0000: | |
| 6666:6666: | |
| 0000:0/116 | |
| | |
+------------------+----------+
| ffff:0000: | 2 |
| 1111:1111: | |
| 0000:0000: | |
| 0000:0000/116 | |
| | |
+------------------+----------+
| ffff:0000: | 3 |
| 1111:1111: | |
| 1111:1111: | |
| 0000:0000/116 | |
| | |
+------------------+----------+
.. _table_ipsec_endpoint_inbound_routing:
.. table:: Endpoint 1 Routing Table
+------------------+----------+
| **Dst addr** | **Port** |
| | |
+------------------+----------+
| 172.16.1.5/32 | 0 |
| | |
+------------------+----------+
| 172.16.1.6/32 | 1 |
| | |
+------------------+----------+
| 192.168.185.0/24 | 0 |
| | |
+------------------+----------+
| 192.168.186.0/24 | 1 |
| | |
+------------------+----------+
| 192.168.245.0/24 | 0 |
| | |
+------------------+----------+
| 192.168.246.0/24 | 1 |
| | |
+------------------+----------+
| 192.168.105.0/24 | 2 |
| | |
+------------------+----------+
| 192.168.106.0/24 | 3 |
| | |
+------------------+----------+
| 192.168.55.0/24 | 2 |
| | |
+------------------+----------+
| 192.168.56.0/24 | 3 |
| | |
+------------------+----------+
| 192.168.175.0/24 | 2 |
| | |
+------------------+----------+
| 192.168.176.0/24 | 3 |
| | |
+------------------+----------+
| 192.168.200.0/24 | 2 |
| | |
+------------------+----------+
| 192.168.201.0/24 | 3 |
| | |
+------------------+----------+
| 192.168.240.0/24 | 2 |
| | |
+------------------+----------+
| 192.168.241.0/24 | 3 |
| | |
+------------------+----------+
| 1111:1111: | 0 |
| 1111:1111: | |
| 1111:1111: | |
| 1111:5555/116 | |
| | |
+------------------+----------+
| 1111:1111: | 1 |
| 1111:1111: | |
| 1111:1111: | |
| 1111:6666/116 | |
| | |
+------------------+----------+
| ffff:0000: | 0 |
| 1111:1111: | |
| 0000:0000: | |
| 0000:0000/116 | |
| | |
+------------------+----------+
| ffff:0000: | 1 |
| 1111:1111: | |
| 1111:1111: | |
| 0000:0000/116 | |
| | |
+------------------+----------+
| 0000:0000: | 2 |
| 0000:0000: | |
| aaaa:aaaa: | |
| 0000:0/116 | |
| | |
+------------------+----------+
| 0000:0000: | 3 |
| 0000:0000: | |
| bbbb:bbbb: | |
| 0000:0/116 | |
| | |
+------------------+----------+
| 0000:0000: | 2 |
| 0000:0000: | |
| 5555:5555: | |
| 0000:0/116 | |
| | |
+------------------+----------+
| 0000:0000: | 3 |
| 0000:0000: | |
| 6666:6666: | |
| 0000:0/116 | |
| | |
+------------------+----------+
| 0000:0000: | 2 |
| 1111:1111: | |
| 0000:0000: | |
| 0000:0000/116 | |
| | |
+------------------+----------+
| 0000:0000: | 3 |
| 1111:1111: | |
| 1111:1111: | |
| 0000:0000/116 | |
| | |
+------------------+----------+
|
