this post was submitted on 04 Nov 2026
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    [–] toynbee@lemmy.world 20 points 18 hours ago (1 children)

    I used to use 1.2.3.4 as my gateway.

    At the time I didn't understand why this offended ... Basically everybody.

    [–] chronicledmonocle@lemmy.world 18 points 17 hours ago* (last edited 17 hours ago) (1 children)

    As a Network Engineer: If you did this in my presence, I'd burn you at the goddamn stake. πŸ˜‚

    [–] toynbee@lemmy.world 7 points 17 hours ago (1 children)

    Like I said ... Basically everybody.

    [–] chronicledmonocle@lemmy.world 8 points 17 hours ago (2 children)

    That's mostly because it violates established standards, but you know that already. Lol.

    Also, if you're talking to a network engineer, they probably have PTSD dealing with a client that did this with a 1.0.0.0/8 used internally or some shit and now huge swathes of the internet doesn't work, but somehow it's "our fault" that they can't load random web sites.

    [–] jj4211@lemmy.world 3 points 14 hours ago (1 children)

    That’s mostly because it violates established standards, but you know that already. Lol.

    Hey, for all you know he might actually be the proper owner of that subnet.....

    I know if by some crazy coincedence I had that in my subnet I'd be using it for fun.

    [–] chronicledmonocle@lemmy.world 3 points 14 hours ago

    I recently had a ticket for a university that had a /12 of public IPs. They gave every computer, printer, etc. a public IP on their whole network. Nothing has NAT. It was insane. They could buy an entire other university building with the money they'd make selling some of that address space down to even a /24.

    [–] toynbee@lemmy.world 5 points 17 hours ago (2 children)

    Fwiw, I now use 10.10.220.0/24. I now know what class A, B and C are. I didn't then.

    Hopefully that offers you some comfort.

    [–] jj4211@lemmy.world 4 points 14 hours ago (2 children)

    Everyone knows you need to be using a network like fd25:c74c:a5e9::/64. So much more fun that way.

    [–] toynbee@lemmy.world 1 points 11 hours ago (1 children)

    I'm sure this is hilarious, but I don't know enough about IPv6 to get it.

    [–] jj4211@lemmy.world 2 points 10 hours ago

    It's just a 'proper' IPv6 private address, the IPv6 equivalent of '10.'.

    I say proper as a private address in ipv6 is supposed to be fd, then 40 random bits, then whatever you want. Nothing stops you from having fd::/64 as your private network though. The thinking was people who got tired of merging networks that happened to choose the same 10.x.x.x scheme and/or vpn connecting to multiple sites similarly with the same private address. So they thought it would be swell if every private network on earth would likely be unique, so they said you 'must' randomize 5 bytes of it. Then no renumbering/no conflicting vpn connections.

    [–] chronicledmonocle@lemmy.world 2 points 17 hours ago

    Haha all good homie.

    [–] Taleya@aussie.zone 7 points 21 hours ago* (last edited 5 hours ago) (2 children)

    I'm the cat

    1 is my pc. 254 is the managed micro switch i use to isolate work stuff. Most things are neatly arranged - eg: 70 is the testbed proxmox, 79 is its idrac, 71-78 are the vms, same with 80 on my production proxmox. DHCP is zoned from 101 to 199, IoT are assigned fixed IPs in similar ranges, etc.

    Modem is 11

    [–] toynbee@lemmy.world 6 points 17 hours ago (1 children)
    [–] Taleya@aussie.zone 2 points 5 hours ago

    wrowling noises

    [–] chronicledmonocle@lemmy.world 3 points 17 hours ago (1 children)
    [–] Taleya@aussie.zone 4 points 5 hours ago (1 children)

    No one. And even funnier? I do this shit professionally

    Lol you fucking psycho. Love it.

    [–] notabot@piefed.social 12 points 1 day ago (5 children)

    Nah, put your gateway in a different subnet, but on the same network segment, and add a static /32 route to it on every client.

    [–] cheet@infosec.pub 2 points 18 hours ago (1 children)

    Is there a specific reason behind this? Never considered it but I could see it being useful since most specific routes win.

    [–] notabot@piefed.social 3 points 17 hours ago (1 children)

    Mostly to make the next sysadmin (or yourself in 6 months) weep. There's nothing preventing there being multiple IP subnets on a single network segment, but you'd usually handle that with separate VLANs, or at least an interface alias, so the machine saw both subnets. About the only reason I could see for just adding a static route would be if you're in the middle of reconfiguring your network to a new subnet but you still need the hosts you haven't updated to be able to route.

    [–] jj4211@lemmy.world 2 points 14 hours ago

    The real nightmare when someone puts two ip addresses on the same host through different interfaces. Now that makes for some confusing troubleshooting and explanations in various applications.

    What really gets me is in about 3/4 networks in the last couple of weeks I've been asked to help troubleshoot, the problem has been duplicate IP addresses. I don't know what is going on with people...

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    [–] nonentity@sh.itjust.works 14 points 1 day ago (1 children)

    Subnet: 10/8
    Gateway: 10.2.5.5

    [–] chronicledmonocle@lemmy.world 4 points 17 hours ago

    Thanks. I hate it.

    [–] signalsayge@infosec.pub 20 points 1 day ago (9 children)

    I love that people forget about 127.0.0.0/8 being the loopback network. Everyone just uses .1 when there are so many to choose from.

    [–] recursivethinking@lemmy.world 4 points 12 hours ago

    According ding the the law of minimal keystrokes, there's actually only 9 to choose from.

    After applying the law of minimal motion, you're down to even fewer.

    Then you go a step further to just using 127.1 (or your preferred last digit)

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