1# 2# SPDX-License-Identifier: BSD-2-Clause 3# 4# Copyright (c) 2020 The FreeBSD Foundation 5# 6# This software was developed by Kristof Provost under sponsorship 7# from the FreeBSD Foundation. 8# 9# Redistribution and use in source and binary forms, with or without 10# modification, are permitted provided that the following conditions 11# are met: 12# 1. Redistributions of source code must retain the above copyright 13# notice, this list of conditions and the following disclaimer. 14# 2. Redistributions in binary form must reproduce the above copyright 15# notice, this list of conditions and the following disclaimer in the 16# documentation and/or other materials provided with the distribution. 17# 18# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28# SUCH DAMAGE. 29 30. $(atf_get_srcdir)/../common/vnet.subr 31 32atf_test_case "bridge_transmit_ipv4_unicast" "cleanup" 33bridge_transmit_ipv4_unicast_head() 34{ 35 atf_set descr 'bridge_transmit_ipv4_unicast bridging test' 36 atf_set require.user root 37} 38 39bridge_transmit_ipv4_unicast_body() 40{ 41 vnet_init 42 43 epair_alcatraz=$(vnet_mkepair) 44 epair_singsing=$(vnet_mkepair) 45 46 vnet_mkjail alcatraz ${epair_alcatraz}b 47 vnet_mkjail singsing ${epair_singsing}b 48 49 jexec alcatraz ifconfig ${epair_alcatraz}b 192.0.2.1/24 up 50 jexec singsing ifconfig ${epair_singsing}b 192.0.2.2/24 up 51 52 bridge=$(vnet_mkbridge) 53 54 ifconfig ${bridge} up 55 ifconfig ${epair_alcatraz}a up 56 ifconfig ${epair_singsing}a up 57 ifconfig ${bridge} addm ${epair_alcatraz}a 58 ifconfig ${bridge} addm ${epair_singsing}a 59 60 atf_check -s exit:0 -o ignore jexec alcatraz ping -c 3 -t 1 192.0.2.2 61 atf_check -s exit:0 -o ignore jexec singsing ping -c 3 -t 1 192.0.2.1 62} 63 64bridge_transmit_ipv4_unicast_cleanup() 65{ 66 vnet_cleanup 67} 68 69atf_test_case "stp" "cleanup" 70stp_head() 71{ 72 atf_set descr 'Spanning tree test' 73 atf_set require.user root 74} 75 76stp_body() 77{ 78 vnet_init 79 80 epair_one=$(vnet_mkepair) 81 epair_two=$(vnet_mkepair) 82 bridge_a=$(vnet_mkbridge) 83 bridge_b=$(vnet_mkbridge) 84 85 vnet_mkjail a ${bridge_a} ${epair_one}a ${epair_two}a 86 vnet_mkjail b ${bridge_b} ${epair_one}b ${epair_two}b 87 88 jexec a ifconfig ${epair_one}a up 89 jexec a ifconfig ${epair_two}a up 90 jexec a ifconfig ${bridge_a} addm ${epair_one}a 91 jexec a ifconfig ${bridge_a} addm ${epair_two}a 92 93 jexec b ifconfig ${epair_one}b up 94 jexec b ifconfig ${epair_two}b up 95 jexec b ifconfig ${bridge_b} addm ${epair_one}b 96 jexec b ifconfig ${bridge_b} addm ${epair_two}b 97 98 jexec a ifconfig ${bridge_a} 192.0.2.1/24 99 100 # Enable spanning tree 101 jexec a ifconfig ${bridge_a} stp ${epair_one}a 102 jexec a ifconfig ${bridge_a} stp ${epair_two}a 103 jexec b ifconfig ${bridge_b} stp ${epair_one}b 104 jexec b ifconfig ${bridge_b} stp ${epair_two}b 105 106 jexec b ifconfig ${bridge_b} up 107 jexec a ifconfig ${bridge_a} up 108 109 # Give STP time to do its thing 110 sleep 5 111 112 a_discard=$(jexec a ifconfig ${bridge_a} | grep discarding) 113 b_discard=$(jexec b ifconfig ${bridge_b} | grep discarding) 114 115 if [ -z "${a_discard}" ] && [ -z "${b_discard}" ] 116 then 117 atf_fail "STP failed to detect bridging loop" 118 fi 119 120 # We must also have at least some forwarding interfaces 121 a_forwarding=$(jexec a ifconfig ${bridge_a} | grep forwarding) 122 b_forwarding=$(jexec b ifconfig ${bridge_b} | grep forwarding) 123 124 if [ -z "${a_forwarding}" ] && [ -z "${b_forwarding}" ] 125 then 126 atf_fail "STP failed to detect bridging loop" 127 fi 128} 129 130stp_cleanup() 131{ 132 vnet_cleanup 133} 134 135atf_test_case "stp_vlan" "cleanup" 136stp_vlan_head() 137{ 138 atf_set descr 'Spanning tree on VLAN test' 139 atf_set require.user root 140} 141 142stp_vlan_body() 143{ 144 vnet_init 145 146 epair_one=$(vnet_mkepair) 147 epair_two=$(vnet_mkepair) 148 bridge_a=$(vnet_mkbridge) 149 bridge_b=$(vnet_mkbridge) 150 151 vnet_mkjail a ${bridge_a} ${epair_one}a ${epair_two}a 152 vnet_mkjail b ${bridge_b} ${epair_one}b ${epair_two}b 153 154 jexec a ifconfig ${epair_one}a up 155 jexec a ifconfig ${epair_two}a up 156 vlan_a_one=$(jexec a ifconfig vlan create vlandev ${epair_one}a vlan 42) 157 vlan_a_two=$(jexec a ifconfig vlan create vlandev ${epair_two}a vlan 42) 158 jexec a ifconfig ${vlan_a_one} up 159 jexec a ifconfig ${vlan_a_two} up 160 jexec a ifconfig ${bridge_a} addm ${vlan_a_one} 161 jexec a ifconfig ${bridge_a} addm ${vlan_a_two} 162 163 jexec b ifconfig ${epair_one}b up 164 jexec b ifconfig ${epair_two}b up 165 vlan_b_one=$(jexec b ifconfig vlan create vlandev ${epair_one}b vlan 42) 166 vlan_b_two=$(jexec b ifconfig vlan create vlandev ${epair_two}b vlan 42) 167 jexec b ifconfig ${vlan_b_one} up 168 jexec b ifconfig ${vlan_b_two} up 169 jexec b ifconfig ${bridge_b} addm ${vlan_b_one} 170 jexec b ifconfig ${bridge_b} addm ${vlan_b_two} 171 172 jexec a ifconfig ${bridge_a} 192.0.2.1/24 173 174 # Enable spanning tree 175 jexec a ifconfig ${bridge_a} stp ${vlan_a_one} 176 jexec a ifconfig ${bridge_a} stp ${vlan_a_two} 177 jexec b ifconfig ${bridge_b} stp ${vlan_b_one} 178 jexec b ifconfig ${bridge_b} stp ${vlan_b_two} 179 180 jexec b ifconfig ${bridge_b} up 181 jexec a ifconfig ${bridge_a} up 182 183 # Give STP time to do its thing 184 sleep 5 185 186 a_discard=$(jexec a ifconfig ${bridge_a} | grep discarding) 187 b_discard=$(jexec b ifconfig ${bridge_b} | grep discarding) 188 189 if [ -z "${a_discard}" ] && [ -z "${b_discard}" ] 190 then 191 atf_fail "STP failed to detect bridging loop" 192 fi 193 194 # We must also have at least some forwarding interfaces 195 a_forwarding=$(jexec a ifconfig ${bridge_a} | grep forwarding) 196 b_forwarding=$(jexec b ifconfig ${bridge_b} | grep forwarding) 197 198 if [ -z "${a_forwarding}" ] && [ -z "${b_forwarding}" ] 199 then 200 atf_fail "STP failed to detect bridging loop" 201 fi 202} 203 204stp_vlan_cleanup() 205{ 206 vnet_cleanup 207} 208 209atf_test_case "static" "cleanup" 210static_head() 211{ 212 atf_set descr 'Bridge static address test' 213 atf_set require.user root 214} 215 216static_body() 217{ 218 vnet_init 219 220 epair=$(vnet_mkepair) 221 bridge=$(vnet_mkbridge) 222 223 vnet_mkjail one ${bridge} ${epair}a 224 225 ifconfig ${epair}b up 226 227 jexec one ifconfig ${bridge} up 228 jexec one ifconfig ${epair}a up 229 jexec one ifconfig ${bridge} addm ${epair}a 230 231 # Wrong interface 232 atf_check -s exit:1 -o ignore -e ignore \ 233 jexec one ifconfig ${bridge} static ${epair}b 00:01:02:03:04:05 234 235 # Bad address format 236 atf_check -s exit:1 -o ignore -e ignore \ 237 jexec one ifconfig ${bridge} static ${epair}a 00:01:02:03:04 238 239 # Correct add 240 atf_check -s exit:0 -o ignore \ 241 jexec one ifconfig ${bridge} static ${epair}a 00:01:02:03:04:05 242 243 # List addresses 244 atf_check -s exit:0 -o ignore \ 245 jexec one ifconfig ${bridge} addr 246 247 # Delete with bad address format 248 atf_check -s exit:1 -o ignore -e ignore \ 249 jexec one ifconfig ${bridge} deladdr 00:01:02:03:04 250 251 # Delete with unlisted address 252 atf_check -s exit:1 -o ignore -e ignore \ 253 jexec one ifconfig ${bridge} deladdr 00:01:02:03:04:06 254 255 # Correct delete 256 atf_check -s exit:0 -o ignore \ 257 jexec one ifconfig ${bridge} deladdr 00:01:02:03:04:05 258} 259 260static_cleanup() 261{ 262 vnet_cleanup 263} 264 265atf_test_case "span" "cleanup" 266span_head() 267{ 268 atf_set descr 'Bridge span test' 269 atf_set require.user root 270 atf_set require.progs scapy 271} 272 273span_body() 274{ 275 vnet_init 276 277 epair=$(vnet_mkepair) 278 epair_span=$(vnet_mkepair) 279 bridge=$(vnet_mkbridge) 280 281 vnet_mkjail one ${bridge} ${epair}a ${epair_span}a 282 283 ifconfig ${epair}b up 284 ifconfig ${epair_span}b up 285 286 jexec one ifconfig ${bridge} up 287 jexec one ifconfig ${epair}a up 288 jexec one ifconfig ${epair_span}a up 289 jexec one ifconfig ${bridge} addm ${epair}a 290 291 jexec one ifconfig ${bridge} span ${epair_span}a 292 jexec one ifconfig ${bridge} 192.0.2.1/24 293 294 # Send some traffic through the span 295 jexec one ping -c 1 -t 1 192.0.2.2 296 297 # Check that we see the traffic on the span interface 298 atf_check -s exit:0 \ 299 $(atf_get_srcdir)/../netpfil/common/pft_ping.py \ 300 --sendif ${epair}b \ 301 --to 192.0.2.2 \ 302 --recvif ${epair_span}b 303 304 jexec one ifconfig ${bridge} -span ${epair_span}a 305 306 # And no more traffic after we remove the span 307 atf_check -s exit:1 \ 308 $(atf_get_srcdir)/../netpfil/common/pft_ping.py \ 309 --sendif ${epair}b \ 310 --to 192.0.2.2 \ 311 --recvif ${epair_span}b 312} 313 314span_cleanup() 315{ 316 vnet_cleanup 317} 318 319atf_test_case "delete_with_members" "cleanup" 320delete_with_members_head() 321{ 322 atf_set descr 'Delete a bridge which still has member interfaces' 323 atf_set require.user root 324} 325 326delete_with_members_body() 327{ 328 vnet_init 329 330 bridge=$(vnet_mkbridge) 331 epair=$(vnet_mkepair) 332 333 ifconfig ${bridge} 192.0.2.1/24 up 334 ifconfig ${epair}a up 335 ifconfig ${bridge} addm ${epair}a 336 337 ifconfig ${bridge} destroy 338} 339 340delete_with_members_cleanup() 341{ 342 vnet_cleanup 343} 344 345atf_test_case "mac_conflict" "cleanup" 346mac_conflict_head() 347{ 348 atf_set descr 'Ensure that bridges in different jails get different mac addresses' 349 atf_set require.user root 350} 351 352mac_conflict_body() 353{ 354 vnet_init 355 356 epair=$(vnet_mkepair) 357 358 # Ensure the bridge module is loaded so jails can use it. 359 tmpbridge=$(vnet_mkbridge) 360 361 vnet_mkjail bridge_mac_conflict_one ${epair}a 362 vnet_mkjail bridge_mac_conflict_two ${epair}b 363 364 jexec bridge_mac_conflict_one ifconfig bridge create 365 jexec bridge_mac_conflict_one ifconfig bridge0 192.0.2.1/24 up \ 366 addm ${epair}a 367 jexec bridge_mac_conflict_one ifconfig ${epair}a up 368 369 jexec bridge_mac_conflict_two ifconfig bridge create 370 jexec bridge_mac_conflict_two ifconfig bridge0 192.0.2.2/24 up \ 371 addm ${epair}b 372 jexec bridge_mac_conflict_two ifconfig ${epair}b up 373 374 atf_check -s exit:0 -o ignore \ 375 jexec bridge_mac_conflict_one ping -c 3 192.0.2.2 376} 377 378mac_conflict_cleanup() 379{ 380 vnet_cleanup 381} 382 383atf_test_case "inherit_mac" "cleanup" 384inherit_mac_head() 385{ 386 atf_set descr 'Bridge inherit_mac test, #216510' 387 atf_set require.user root 388} 389 390inherit_mac_body() 391{ 392 vnet_init 393 394 bridge=$(vnet_mkbridge) 395 epair=$(vnet_mkepair) 396 vnet_mkjail one ${bridge} ${epair}a 397 398 jexec one sysctl net.link.bridge.inherit_mac=1 399 400 # Attempt to provoke the panic described in #216510 401 jexec one ifconfig ${bridge} 192.0.0.1/24 up 402 jexec one ifconfig ${bridge} addm ${epair}a 403} 404 405inherit_mac_cleanup() 406{ 407 vnet_cleanup 408} 409 410atf_test_case "stp_validation" "cleanup" 411stp_validation_head() 412{ 413 atf_set descr 'Check STP validation' 414 atf_set require.user root 415 atf_set require.progs scapy 416} 417 418stp_validation_body() 419{ 420 vnet_init 421 422 epair_one=$(vnet_mkepair) 423 epair_two=$(vnet_mkepair) 424 bridge=$(vnet_mkbridge) 425 426 ifconfig ${bridge} up 427 ifconfig ${bridge} addm ${epair_one}a addm ${epair_two}a 428 ifconfig ${bridge} stp ${epair_one}a stp ${epair_two}a 429 430 ifconfig ${epair_one}a up 431 ifconfig ${epair_one}b up 432 ifconfig ${epair_two}a up 433 ifconfig ${epair_two}b up 434 435 # Wait until the interfaces are no longer discarding 436 while ifconfig ${bridge} | grep 'state discarding' >/dev/null 437 do 438 sleep 1 439 done 440 441 # Now inject invalid STP BPDUs on epair_one and see if they're repeated 442 # on epair_two 443 atf_check -s exit:0 \ 444 $(atf_get_srcdir)/stp.py \ 445 --sendif ${epair_one}b \ 446 --recvif ${epair_two}b 447} 448 449stp_validation_cleanup() 450{ 451 vnet_cleanup 452} 453 454atf_test_case "gif" "cleanup" 455gif_head() 456{ 457 atf_set descr 'gif as a bridge member' 458 atf_set require.user root 459} 460 461gif_body() 462{ 463 vnet_init 464 465 epair=$(vnet_mkepair) 466 467 vnet_mkjail one ${epair}a 468 vnet_mkjail two ${epair}b 469 470 jexec one sysctl net.link.gif.max_nesting=2 471 jexec two sysctl net.link.gif.max_nesting=2 472 473 jexec one ifconfig ${epair}a 192.0.2.1/24 up 474 jexec two ifconfig ${epair}b 192.0.2.2/24 up 475 476 # Tunnel 477 gif_one=$(jexec one ifconfig gif create) 478 gif_two=$(jexec two ifconfig gif create) 479 480 jexec one ifconfig ${gif_one} tunnel 192.0.2.1 192.0.2.2 481 jexec one ifconfig ${gif_one} up 482 jexec two ifconfig ${gif_two} tunnel 192.0.2.2 192.0.2.1 483 jexec two ifconfig ${gif_two} up 484 485 bridge_one=$(jexec one ifconfig bridge create) 486 bridge_two=$(jexec two ifconfig bridge create) 487 jexec one ifconfig ${bridge_one} 198.51.100.1/24 up 488 jexec one ifconfig ${bridge_one} addm ${gif_one} 489 jexec two ifconfig ${bridge_two} 198.51.100.2/24 up 490 jexec two ifconfig ${bridge_two} addm ${gif_two} 491 492 # Sanity check 493 atf_check -s exit:0 -o ignore \ 494 jexec one ping -c 1 192.0.2.2 495 496 # Test tunnel 497 atf_check -s exit:0 -o ignore \ 498 jexec one ping -c 1 198.51.100.2 499 atf_check -s exit:0 -o ignore \ 500 jexec one ping -c 1 -s 1200 198.51.100.2 501 atf_check -s exit:0 -o ignore \ 502 jexec one ping -c 1 -s 2000 198.51.100.2 503 504 # Higher MTU on the tunnel than on the underlying interface 505 jexec one ifconfig ${epair}a mtu 1000 506 jexec two ifconfig ${epair}b mtu 1000 507 508 atf_check -s exit:0 -o ignore \ 509 jexec one ping -c 1 -s 1200 198.51.100.2 510 atf_check -s exit:0 -o ignore \ 511 jexec one ping -c 1 -s 2000 198.51.100.2 512} 513 514gif_cleanup() 515{ 516 vnet_cleanup 517} 518 519atf_test_case "mtu" "cleanup" 520mtu_head() 521{ 522 atf_set descr 'Bridge MTU changes' 523 atf_set require.user root 524} 525 526get_mtu() 527{ 528 intf=$1 529 530 ifconfig ${intf} ether | awk '$5 == "mtu" { print $6 }' 531} 532 533check_mtu() 534{ 535 intf=$1 536 expected=$2 537 538 mtu=$(get_mtu $intf) 539 if [ $mtu -ne $expected ]; 540 then 541 atf_fail "Expected MTU of $expected on $intf but found $mtu" 542 fi 543} 544 545mtu_body() 546{ 547 vnet_init 548 549 epair=$(vnet_mkepair) 550 gif=$(ifconfig gif create) 551 echo ${gif} >> created_interfaces.lst 552 bridge=$(vnet_mkbridge) 553 554 atf_check -s exit:0 \ 555 ifconfig ${bridge} addm ${epair}a 556 557 ifconfig ${gif} mtu 1500 558 atf_check -s exit:0 \ 559 ifconfig ${bridge} addm ${gif} 560 561 # Changing MTU changes it for all member interfaces 562 atf_check -s exit:0 \ 563 ifconfig ${bridge} mtu 2000 564 565 check_mtu ${bridge} 2000 566 check_mtu ${gif} 2000 567 check_mtu ${epair}a 2000 568 569 # Rejected MTUs mean none of the MTUs change 570 atf_check -s exit:1 -e ignore \ 571 ifconfig ${bridge} mtu 9000 572 573 check_mtu ${bridge} 2000 574 check_mtu ${gif} 2000 575 check_mtu ${epair}a 2000 576 577 # We're not allowed to change the MTU of a member interface 578 atf_check -s exit:1 -e ignore \ 579 ifconfig ${epair}a mtu 1900 580 check_mtu ${epair}a 2000 581 582 # Test adding an interface with a different MTU 583 new_epair=$(vnet_mkepair) 584 check_mtu ${new_epair}a 1500 585 atf_check -s exit:0 -e ignore \ 586 ifconfig ${bridge} addm ${new_epair}a 587 588 check_mtu ${bridge} 2000 589 check_mtu ${gif} 2000 590 check_mtu ${epair}a 2000 591 check_mtu ${new_epair}a 2000 592} 593 594mtu_cleanup() 595{ 596 vnet_cleanup 597} 598 599atf_test_case "vlan" "cleanup" 600vlan_head() 601{ 602 atf_set descr 'Ensure the bridge takes vlan ID into account, PR#270559' 603 atf_set require.user root 604} 605 606vlan_body() 607{ 608 vnet_init 609 610 vid=1 611 612 epaira=$(vnet_mkepair) 613 epairb=$(vnet_mkepair) 614 615 br=$(vnet_mkbridge) 616 617 vnet_mkjail one ${epaira}b 618 vnet_mkjail two ${epairb}b 619 620 ifconfig ${br} up 621 ifconfig ${epaira}a up 622 ifconfig ${epairb}a up 623 ifconfig ${br} addm ${epaira}a addm ${epairb}a 624 625 jexec one ifconfig ${epaira}b up 626 jexec one ifconfig ${epaira}b.${vid} create 627 628 jexec two ifconfig ${epairb}b up 629 jexec two ifconfig ${epairb}b.${vid} create 630 631 # Create a MAC address conflict between an untagged and tagged interface 632 jexec two ifconfig ${epairb}b.${vid} ether 02:05:6e:06:28:1a 633 jexec one ifconfig ${epaira}b ether 02:05:6e:06:28:1a 634 jexec one ifconfig ${epaira}b.${vid} ether 02:05:6e:06:28:1b 635 636 # Add ip address, will also populate $br's fowarding table, by ARP announcement 637 jexec one ifconfig ${epaira}b.${vid} 192.0.2.1/24 up 638 jexec two ifconfig ${epairb}b.${vid} 192.0.2.2/24 up 639 640 sleep 0.5 641 642 ifconfig ${br} 643 jexec one ifconfig 644 jexec two ifconfig 645 ifconfig ${br} addr 646 647 atf_check -s exit:0 -o ignore \ 648 jexec one ping -c 1 -t 1 192.0.2.2 649 650 # This will trigger a mac flap (by ARP announcement) 651 jexec one ifconfig ${epaira}b 192.0.2.1/24 up 652 653 sleep 0.5 654 655 ifconfig ${br} addr 656 657 atf_check -s exit:0 -o ignore \ 658 jexec one ping -c 1 -t 1 192.0.2.2 659} 660 661vlan_cleanup() 662{ 663 vnet_cleanup 664} 665 666atf_test_case "many_bridge_members" "cleanup" 667many_bridge_members_head() 668{ 669 atf_set descr 'many_bridge_members ifconfig test' 670 atf_set require.user root 671} 672 673many_bridge_members_body() 674{ 675 vnet_init 676 677 bridge=$(vnet_mkbridge) 678 ifcount=256 679 for _ in $(seq 1 $ifcount); do 680 epair=$(vnet_mkepair) 681 ifconfig "${bridge}" addm "${epair}"a 682 done 683 684 atf_check -s exit:0 -o inline:"$ifcount\n" \ 685 sh -c "ifconfig ${bridge} | grep member: | wc -l | xargs" 686} 687 688many_bridge_members_cleanup() 689{ 690 vnet_cleanup 691} 692 693atf_init_test_cases() 694{ 695 atf_add_test_case "bridge_transmit_ipv4_unicast" 696 atf_add_test_case "stp" 697 atf_add_test_case "stp_vlan" 698 atf_add_test_case "static" 699 atf_add_test_case "span" 700 atf_add_test_case "inherit_mac" 701 atf_add_test_case "delete_with_members" 702 atf_add_test_case "mac_conflict" 703 atf_add_test_case "stp_validation" 704 atf_add_test_case "gif" 705 atf_add_test_case "mtu" 706 atf_add_test_case "vlan" 707 atf_add_test_case "many_bridge_members" 708} 709
