Networking Memes

Someone finally said it. DNS is apparently a scam perpetuated by Big Nameserver to sell more resolvers. Servers were perfectly happy being identified by raw IP addresses until sysadmins got greedy and demanded "respect" in the form of complex distributed systems that nobody understands. The argument here is that we had hosts.txt—a single file that every computer could use to map names to IPs. Simple. Elegant. Completely unscalable. But who needs the internet to grow anyway? Instead, sysadmins convinced everyone we needed this elaborate DNS infrastructure with recursive queries, authoritative nameservers, TTLs, and zone files. Now when someone asks for example.com, you get a 17-step journey through multiple servers just to return an IP address. They've been laughing at us this whole time while we troubleshoot NXDOMAIN errors at 3 AM. The three diagrams with increasing question marks perfectly sum up every developer's understanding of DNS: "I think I get it... wait, what?... I have no idea what's happening anymore."

BGP peering being described as something "even friends can do" is the networking equivalent of saying "even friends can perform open-heart surgery together." Sure, technically possible, but someone's definitely getting hurt. For the uninitiated: BGP (Border Gateway Protocol) is how the entire internet routes traffic between autonomous systems. It's the protocol that literally holds the internet together, and misconfiguring it can take down chunks of the web (looking at you, Facebook 2021 outage). Setting up BGP peering between networks requires trust, technical competency, and usually involves at least three conference calls where nobody's mic works properly. The idea that you'd casually BGP peer with your buddy like you're sharing Netflix passwords is both adorable and terrifying. "Hey bro, wanna exchange routing tables?" is not normal friend behavior. That's enterprise-level commitment right there.

When you're working from home and spot an unauthorized device on your network, only to realize it's just a spider chilling on your ceiling-mounted WiFi access point. The little guy's literally web developing in the most literal sense possible. Nothing says "security vulnerability" quite like an eight-legged freelancer who didn't sign the NDA. At least he's working on the frontend—specifically, the front end of your Ubiquiti device. Hope he's not packet sniffing or worse, building his own mesh network.

The entire internet is basically a Jenga tower held together by duct tape, prayers, and a few corporations we pretend to trust. At the very bottom, literally underwater, sharks are chomping on submarine cables because apparently even marine life has beef with our infrastructure. What's beautiful here is how the whole stack—from ASML making the chips, through Intel/AMD/Nvidia silicon, up past the Linux Foundation, DNS, AWS, Cloudflare, all the way to that precariously balanced mess of "modern digital infrastructure" with WASM and V8—depends on cables that sharks find delicious. Meanwhile, unpaid open source devs are basically holding the entire thing together with their bare hands while AI and Microsoft do... whatever they're doing up there. Fun fact: Sharks actually DO bite undersea internet cables, likely because the electromagnetic fields mess with their sensory organs. Google had to wrap their cables in Kevlar-like material. So yeah, your 404 error might literally be because a great white got hungry. The internet runs on vibes and shark-resistant coating.

UDP vs TCP but make it wildly inappropriate. The left side shows UDP doing its thing—just yeeting that dick pic into the void with zero confirmation, no handshake, no nothing. Classic fire-and-forget protocol energy. Meanwhile TCP on the right is out here establishing a full three-way handshake before sending anything, complete with consent verification, acknowledgments for every message, and a proper connection termination with FIN packets. It's the networking equivalent of asking "may I?" before every single action. The best part? TCP even acknowledges the compliment AND the thank you. That's some next-level reliable delivery right there. UDP could never—it doesn't even know if its packet arrived, let alone whether anyone appreciated it. This is what they mean when they say "connection-oriented vs connectionless protocols" in your networking textbook, just with significantly more inappropriate metaphors than your professor used.

TCP is that overprotective parent who walks you through every step, confirms you got the message, and makes sure nothing gets lost. Meanwhile, UDP is out here just launching packets into the void like "good luck, buddy!" and moving on with its life. TCP does all the heavy lifting with its 3-way handshake, sequencing, acknowledgments, and retransmissions—basically the networking equivalent of sending a certified letter with tracking. UDP? Just yeeting data packets across the network with zero regard for whether they arrive or in what order. No handshake, no acknowledgment, no second chances. Fire and forget, baby. This is why video streaming and online gaming use UDP—because who cares if you lose a frame or two? But when you're downloading files or loading web pages, you better believe TCP is there making sure every single byte arrives intact. Choose your protocol based on whether you value reliability or just vibes.