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cannedtuna@lemmy.world to linuxmemes@lemmy.worldEnglish · 2 days ago

Subnet Mask

lemmy.world

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Subnet Mask

lemmy.world

cannedtuna@lemmy.world to linuxmemes@lemmy.worldEnglish · 2 days ago
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  • kinther@lemmy.world
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    8 hours ago

    For more fun IPv6 knowledge, Hurricane Electric provides a certification course! You also get a t-shirt when you finish it.

    https://ipv6.he.net/certification/

    • dbtng@eviltoast.org
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      8 hours ago

      That’s pretty cool. I crammed to pass the CCNA, and some of its fading from my head now. I could use a refresher. Thanks!

  • comador @lemmy.world
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    2 days ago

    Momma I’m comin’ 127.0.0.1

    • Hishiryo@scribe.disroot.org
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      8 hours ago

      God: I’m 0.0.0.0/::1

    • nonentity@sh.itjust.works
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      15 hours ago

      Home is ~, localhost is wherever you are.

    • dbtng@eviltoast.org
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      15 hours ago

      0111111.00000000.00000000.00000001
      But I doubt your momma can read that.
      Mine can’t. She’s not interested in binary or hex, despite my efforts to convince her how fascinating the topic is.

  • in_my_honest_opinion@piefed.social
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    2 days ago

    That’s way too broad, for protection it should probably be 255.255.255.254

    • G_M0N3Y_2503@lemmy.zip
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      11 hours ago

      at least N95!

    • giacomo@lemmy.dbzer0.com
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      2 days ago

      255.255.255.252 for your significant other

      • libewa@feddit.org
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        17 hours ago

        I think you both have an off-by-one error there. It‘s /32 for one device and /31 for 2 devices (selected by the last bit). It feels wrong to have /32 be the entire adress space btw.

        • in_my_honest_opinion@piefed.social
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          2 hours ago

          /32 is often used in static IP networks that face the public, I do it with direct point to point VPNs all the time.

      • somenonewho@feddit.org
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        1 day ago

        I don’t need a gateway or broadcast to talk to my SO just .0 for me and .1 for them

        • kn33@lemmy.world
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          8 hours ago

          Yeah but then you don’t have ARP and you gotta set in the MAC manually and that just seems like a hassle.

  • Cousin Mose@lemmy.hogru.ch
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    2 days ago

    Could we have an IPv6 one? It’s 2026.

    • dbtng@eviltoast.org
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      15 hours ago

      no.

    • HeyJoe@lemmy.world
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      1 day ago

      But it’s not possible to do this joke since ipv6 does not have subnets.

      • Hishiryo@scribe.disroot.org
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        8 hours ago

        There’s no subnets, but there are network length prefixes/CIDR

      • offspec@lemmy.world
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        16 hours ago

        What? There’s no way that’s right, right?

        • kinther@lemmy.world
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          8 hours ago

          You could interpret it that way, sure. There are so many IPv6 addresses you really don’t have to subnet anything like you did in IPv4. The typically “mask” you will see is a /64.

        • dbtng@eviltoast.org
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          15 hours ago

          Well, sort of.
          You can divide up IPv6 addresses as you like.
          But … there’s so much space there that they are typically just divided in half.
          64 bits of subnet (aka routing prefix) + 64 bits of host address.
          They play a lot of games with the first 12 or so bits to say what kind of network it is, and the rules change a lot for multicast and other address types.
          So its not a subnet as you know it, but it still is.

      • Cousin Mose@lemmy.hogru.ch
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        1 day ago

        /24

        • libewa@feddit.org
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          17 hours ago

          /128

          • dbtng@eviltoast.org
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            15 hours ago

            um … that’s wrong.

            • libewa@feddit.org
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              15 hours ago

              why?

              • dbtng@eviltoast.org
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                14 hours ago

                Two reasons.

                You were responding to someone who offered a /24 as a subnet.
                There are 32 bits in an IPv4 address. /24 is 255.255.255.0.
                So they were wrong too in reference to IPv6, but at least they were making sense.
                You responded with /128, which is the full range of the IPv6 address.
                That would be like the prior poster saying /32 aka 255.255.255.255.
                There’s no usable range there.

                And, see my post above for the rest of the breakdown, but you were looking for /64.

                • libewa@feddit.org
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                  13 hours ago

                  But the mask is a firewall to prevent viruses from leaving or reaching you, so a firewall on ::1/128

  • Possibly linux@lemmy.zip
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    2 days ago

    Just use IPV6

    • Hishiryo@scribe.disroot.org
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      8 hours ago

      Network prefix length/CIDR notation: ( ͡° ͜ʖ ͡° )

    • kn33@lemmy.world
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      2 days ago

      /64

  • fistac0rpse@fedia.io
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    2 days ago

    how is this a Linux meme?

    • giacomo@lemmy.dbzer0.com
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      2 days ago

      its hardly even a meme.

    • itrealgood@mander.xyz
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      2 days ago

      He runs allpine btw

  • xia@lemmy.ca
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    2 days ago

    A subnet mask mask!

  • LemmyBruceLeeMarvin@lemmy.ml
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    2 days ago

    I’ll get your coat

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