https://tsvinc.dev/tags/networking/ Recent content in Networking on tsvinc Hugo en-us Tue, 14 Jul 2026 00:00:00 +0000 https://tsvinc.dev/posts/blocky-mikrotik-no-pihole/ Tue, 14 Jul 2026 00:00:00 +0000 https://tsvinc.dev/posts/blocky-mikrotik-no-pihole/ <p><figure class="svg-figure" role="img" aria-label="A hand-drawn doodle: the blocky router as a bouncer — a frowning ad envelope is turned away with an NXDOMAIN sign while a happy clean DNS query envelope is waved through the door"> <svg xmlns="http://www.w3.org/2000/svg" width="1200" height="675" viewBox="0 0 1200 675" role="img" aria-labelledby="title desc"> <title id="title">Blocky guards DNS on a MikroTik router</title> <desc id="desc">A doodled router acts as a bouncer, turning away a frowning ad envelope with an NXDOMAIN paddle while waving a happy clean envelope through.</desc> <rect width="1200" height="675" fill="var(--bg, #111114)"/> <!-- sparse notebook marks --> <g fill="none" stroke="var(--fg-faint, #4a4a52)" stroke-width="2" stroke-linecap="round" opacity="0.48"> <path d="M73 111l19-2m-8-9l2 19M1096 116l20 3m-8-12l-3 20M89 571l22 1m-10-10l-1 21M1081 559l22-3m-12-8l3 20"/> <path d="M177 86c43-8 84-7 124-2M906 88c42 7 78 6 116 0M167 590c45 7 87 7 127 1M901 588c41-6 79-4 117 2"/> <circle cx="353" cy="94" r="3"/><circle cx="858" cy="594" r="4"/><circle cx="1050" cy="211" r="3"/> </g> <!-- motion: rejected left, welcomed right --> <g fill="none" stroke-linecap="round" stroke-linejoin="round"> <path d="M337 333c-39-29-78-31-112-16" stroke="#cc3333" stroke-width="6"/> <path d="M239 304l-18 15 21 8" stroke="#cc3333" stroke-width="6"/> <path d="M289 291l11-15m5 30l19-4m-29 24l12 13" stroke="#cc3333" stroke-width="4"/> <path d="M783 354c39 0 69 2 102 0" stroke="var(--link, #78d8bd)" stroke-width="6"/> <path d="M870 341l18 13-18 13" stroke="var(--link, #78d8bd)" stroke-width="6"/> </g> <!-- blocky router bouncer --> <g stroke-linecap="round" stroke-linejoin="round"> <!-- antennas --> <path d="M481 182l-32-77m35 76l-20-82M718 181l32-77m-30 79l45-70" fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="6"/> <circle cx="457" cy="101" r="7" fill="var(--fg-heading, #e9a447)"/> <circle cx="758" cy="108" r="7" fill="var(--fg-heading, #e9a447)"/> <!-- imperfect router case --> <path d="M420 205Q423 181 449 180L747 184Q777 184 779 212L786 504Q785 532 755 535L448 532Q418 530 418 500Z" fill="var(--bg-secondary, #18181c)" stroke="var(--fg, #cdcdd0)" stroke-width="6"/> <path d="M433 219q164-12 333 1M437 515q164 10 333 0" fill="none" stroke="var(--border, #2a2a30)" stroke-width="3"/> <!-- simple identity badge --> <path d="M457 231q68-8 139 1l-2 52q-69 7-137-1Z" fill="var(--bg, #111114)" stroke="var(--fg-heading, #e9a447)" stroke-width="4"/> <text x="526" y="266" text-anchor="middle" fill="var(--fg-heading, #e9a447)" font-family="Commit Mono, ui-monospace, monospace" font-size="25" font-weight="700">blocky</text> <!-- bouncer face --> <path d="M650 238q13-8 26 0m22 0q13-8 26 0" fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="4"/> <circle cx="666" cy="247" r="5" fill="var(--fg, #cdcdd0)"/> <circle cx="707" cy="247" r="5" fill="var(--fg, #cdcdd0)"/> <path d="M673 270q16 9 32-2" fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="4"/> <!-- open passage --> <path d="M626 322q1-22 23-23l90 2q19 1 20 22l4 192-140-1Z" fill="var(--bg, #111114)" stroke="var(--link, #78d8bd)" stroke-width="5"/> <path d="M640 316q51-8 105 1M641 496q53 8 108 0" fill="none" stroke="var(--fg-faint, #4a4a52)" stroke-width="3"/> <circle cx="742" cy="405" r="6" fill="var(--link, #78d8bd)"/> <!-- stern arm and rejection paddle --> <path d="M420 329c-35-12-58-5-79 22-10 13-19 17-31 14" fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="7"/> <circle cx="306" cy="364" r="9" fill="var(--fg, #cdcdd0)"/> <path d="M337 350l-30-71" fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="8"/> <path d="M242 222q66-17 130 1l10 58q-68 17-132 1Z" fill="var(--bg-secondary, #18181c)" stroke="#cc3333" stroke-width="6"/> <text x="312" y="260" text-anchor="middle" fill="#cc3333" font-family="Commit Mono, ui-monospace, monospace" font-size="21" font-weight="700">NXDOMAIN</text> <!-- welcoming arm --> <path d="M779 326c33-22 56-18 75 5 10 12 20 9 30-2" fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="7"/> <circle cx="888" cy="323" r="9" fill="var(--fg, #cdcdd0)"/> <path d="M884 314l-1-23m7 25l18-14m-17 19l22 4" fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="4"/> <!-- feet --> <path d="M470 532l-11 25h51l7-24M697 535l8 23h51l-13-24" fill="var(--bg-secondary, #18181c)" stroke="var(--fg, #cdcdd0)" stroke-width="6"/> </g> <!-- frowning ad envelope, bounced away --> <g transform="rotate(-7 153 385)" stroke-linecap="round" stroke-linejoin="round"> <path d="M75 338q77-19 153 1l5 79q-78 18-153 0Z" fill="var(--bg-secondary, #18181c)" stroke="var(--accent, #e787db)" stroke-width="6"/> <path d="M82 343l73 46 72-47" fill="none" stroke="var(--accent, #e787db)" stroke-width="4"/> <!-- ad megaphone mark --> <path d="M111 353l24-9 2 21-25-4Zm4 9l5 14" fill="none" stroke="var(--fg-heading, #e9a447)" stroke-width="4"/> <path d="M143 347l11-8m-10 19l14 2" fill="none" stroke="var(--fg-heading, #e9a447)" stroke-width="3"/> <!-- worried face --> <circle cx="171" cy="370" r="5" fill="var(--fg, #cdcdd0)"/> <circle cx="201" cy="369" r="5" fill="var(--fg, #cdcdd0)"/> <path d="M170 397q15-13 31 0" fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="4"/> <!-- stumbling legs --> <path d="M110 424l-19 27m86-22l15 29M77 453l20 1m89 6l21-5" fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="6"/> </g> <!-- happy clean query walking through --> <g transform="rotate(3 932 420)" stroke-linecap="round" stroke-linejoin="round"> <path d="M855 374q76-14 151 1l-3 76q-75 15-149-1Z" fill="var(--bg-secondary, #18181c)" stroke="var(--link, #78d8bd)" stroke-width="6"/> <path d="M860 379l72 43 69-44" fill="none" stroke="var(--link, #78d8bd)" stroke-width="4"/> <!-- happy face --> <path d="M893 405q7 7 14 0m28 1q7 7 14 0M903 427q17 14 35 0" fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="4"/> <!-- jaunty legs --> <path d="M885 454l-8 35m76-33l22 27M861 490l20-2m89-3l21 5" fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="6"/> <!-- little clean sparkle --> <path d="M1018 362l3-18m-9 9l18 2" fill="none" stroke="var(--fg-heading, #e9a447)" stroke-width="4"/> </g> </svg> </figure></p> https://tsvinc.dev/posts/routeros-container-gotchas/ Tue, 14 Jul 2026 00:00:00 +0000 https://tsvinc.dev/posts/routeros-container-gotchas/ <p><figure class="svg-figure" role="img" aria-label="A hand-drawn doodle: a sad container cube asks container=yes? and the router replies press the button, an arrow pointing at its physical mode button — software asks, hardware answers"> <svg xmlns="http://www.w3.org/2000/svg" width="1200" height="675" viewBox="0 0 1200 675" role="img" aria-labelledby="title desc"> <title id="title">A container asks RouterOS to run</title> <desc id="desc">A worried container cube asks for container mode. A large router answers by directing a loose arrow at its recessed physical button.</desc> <defs> <marker id="press-arrow" viewBox="0 0 12 12" refX="10" refY="6" markerWidth="11" markerHeight="11" orient="auto"> <path d="M1 1 L11 6 L1 11 L3.4 6 Z" fill="var(--link, #78d8bd)"/> </marker> </defs> <rect x="0" y="0" width="1200" height="675" fill="var(--bg, #111114)"/> <!-- Sparse notebook texture keeps the field loose without becoming annotation. --> <g fill="none" stroke="var(--fg-faint, #4a4a52)" stroke-width="2" stroke-linecap="round" opacity="0.5"> <path d="M54 118 q21 -6 42 0 M106 116 l17 -3"/> <path d="M1080 103 q26 5 54 -1 M1142 103 l17 3"/> <path d="M49 570 q23 7 49 1 M1094 584 q28 -6 57 1"/> <path d="M542 597 q56 8 112 0 M667 600 q19 3 39 -1"/> </g> <!-- The software request: one small, worried container cube. --> <g transform="rotate(-2 339 382)"> <path d="M215 286 L357 218 L490 292 L348 365 Z" fill="var(--bg-secondary, #18181c)" stroke="var(--accent, #e787db)" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/> <path d="M215 286 L348 365 L347 523 L215 445 Z" fill="var(--bg-secondary, #18181c)" stroke="var(--accent, #e787db)" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/> <path d="M348 365 L490 292 L488 451 L347 523 Z" fill="var(--bg, #111114)" stroke="var(--accent, #e787db)" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/> <!-- corrugations and corner hardware --> <g fill="none" stroke="var(--fg-muted, #aaaaaf)" stroke-width="3" stroke-linecap="round" opacity="0.82"> <path d="M239 302 L238 445 M267 320 L266 461 M296 337 L295 478 M324 353 L324 495"/> <path d="M373 365 L372 504 M402 350 L401 486 M431 336 L430 469 M460 321 L459 451"/> <path d="M239 278 L359 238 M265 296 L386 255 M294 312 L414 272 M321 330 L442 286"/> </g> <g fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="4" stroke-linecap="round" stroke-linejoin="round"> <path d="M224 310 l18 11 l0 21 M339 378 l-17 -10 l0 23 M224 425 l18 11 l0 21 M338 500 l-17 -10 l0 -22"/> </g> <!-- restrained face: looking toward the hardware --> <ellipse cx="277" cy="391" rx="7" ry="10" fill="var(--fg, #cdcdd0)"/> <ellipse cx="316" cy="414" rx="7" ry="10" fill="var(--fg, #cdcdd0)"/> <circle cx="280" cy="389" r="2.5" fill="var(--bg, #111114)"/> <circle cx="319" cy="412" r="2.5" fill="var(--bg, #111114)"/> <path d="M272 444 Q293 430 321 455" fill="none" stroke="var(--fg, #cdcdd0)" stroke-width="4" stroke-linecap="round"/> <!-- small pleading wobble marks, not limbs --> <path d="M193 354 q-14 8 -19 22 M195 378 q-16 2 -23 13" fill="none" stroke="var(--fg-heading, #e9a447)" stroke-width="4" stroke-linecap="round"/> </g> <!-- Software asks. --> <g transform="rotate(-1 292 171)"> <path d="M116 115 Q113 101 130 98 L425 101 Q440 102 441 116 L438 181 Q437 196 421 196 L337 194 L309 221 L302 193 L132 191 Q117 190 117 176 Z" fill="var(--bg-secondary, #18181c)" stroke="var(--fg, #cdcdd0)" stroke-width="4" stroke-linecap="round" stroke-linejoin="round"/> <text x="153" y="158" fill="var(--accent, #e787db)" font-family="Commit Mono, ui-monospace, monospace" font-size="27" font-weight="700">container=yes?</text> </g> <!-- The hardware answer: a big physical router, solid and immovable. --> <g transform="rotate(0.7 858 388)"> <!-- antennas --> <path d="M694 277 L670 174 Q667 160 678 157 Q691 155 694 170 L716 276" fill="var(--bg-secondary, #18181c)" stroke="var(--fg, #cdcdd0)" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/> <path d="M1032 274 L1057 166 Q1060 153 1072 156 Q1084 160 1080 173 L1054 280" fill="var(--bg-secondary, #18181c)" stroke="var(--fg, #cdcdd0)" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/> <!-- top and front planes --> <path d="M635 284 Q639 269 655 268 L1039 272 Q1052 272 1060 285 L1100 337 L683 340 Z" fill="var(--bg-secondary, #18181c)" stroke="var(--fg, #cdcdd0)" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/> <path d="M683 340 L1100 337 L1087 514 Q1086 528 1070 529 L696 530 Q680 529 680 514 Z" fill="var(--bg-secondary, #18181c)" stroke="var(--fg, #cdcdd0)" stroke-width="5" stroke-linecap="round" stroke-linejoin="round"/> <path d="M685 383 C796 379 958 388 1096 381" fill="none" stroke="var(--border, #2a2a30)" stroke-width="3" stroke-linecap="round"/> <!-- vents and status lights --> <g fill="none" stroke="var(--fg-faint, #4a4a52)" stroke-width="3" stroke-linecap="round"> <path d="M720 306 l57 0 M791 306 l57 1 M862 307 l57 -1 M933 307 l57 1"/> </g> <circle cx="731" cy="463" r="7" fill="var(--link, #78d8bd)"/> <circle cx="760" cy="463" r="7" fill="var(--fg-heading, #e9a447)"/> <circle cx="789" cy="463" r="7" fill="var(--fg-muted, #aaaaaf)"/> <path d="M713 492 q58 5 112 0" fill="none" stroke="var(--fg-faint, #4a4a52)" stroke-width="3" stroke-linecap="round"/> <!-- the unmistakably physical, recessed mode/reset button --> <circle cx="994" cy="447" r="46" fill="var(--bg, #111114)" stroke="var(--fg-heading, #e9a447)" stroke-width="5"/> <circle cx="994" cy="447" r="23" fill="var(--bg-secondary, #18181c)" stroke="var(--accent, #e787db)" stroke-width="5"/> <circle cx="994" cy="447" r="8" fill="var(--fg, #cdcdd0)"/> <path d="M958 413 q37 -25 73 2 M962 482 q34 21 66 -2" fill="none" stroke="var(--fg-muted, #aaaaaf)" stroke-width="2.5" stroke-linecap="round" opacity="0.85"/> <!-- feet --> <path d="M725 530 l-4 16 l44 0 l-5 -16 M1018 529 l-4 17 l45 0 l-6 -17" fill="var(--fg, #cdcdd0)" stroke="var(--fg, #cdcdd0)" stroke-width="2" stroke-linejoin="round"/> </g> <!-- Hardware answers. The loose arrow performs the press; no hand is needed. --> <g transform="rotate(1 865 165)"> <path d="M650 91 Q648 78 663 76 L1048 78 Q1064 79 1065 94 L1064 160 Q1063 175 1047 176 L941 174 L917 203 L910 174 L665 171 Q650 170 651 155 Z" fill="var(--bg-secondary, #18181c)" stroke="var(--fg, #cdcdd0)" stroke-width="4" stroke-linecap="round" stroke-linejoin="round"/> <text x="701" y="137" fill="var(--link, #78d8bd)" font-family="Commit Mono, ui-monospace, monospace" font-size="28" font-weight="700">press the button</text> </g> <path d="M938 200 C1000 238 1058 292 1037 352 C1028 380 1009 393 997 411" fill="none" stroke="var(--link, #78d8bd)" stroke-width="7" stroke-linecap="round" marker-end="url(#press-arrow)"/> <path d="M1019 381 l13 8 M1030 365 l15 4 M1006 393 l8 12" fill="none" stroke="var(--fg-heading, #e9a447)" stroke-width="4" stroke-linecap="round"/> <!-- grounding scribbles --> <g fill="none" stroke="var(--border, #2a2a30)" stroke-width="3" stroke-linecap="round"> <path d="M144 557 C286 567 422 554 527 562"/> <path d="M622 563 C808 552 998 568 1122 559"/> </g> </svg> </figure></p>