Rocket Surgeon

  • 8 Posts
  • 240 Comments
Joined 1 year ago
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Cake day: March 10th, 2025

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  • dbtng@eviltoast.orgtolinuxmemes@lemmy.worldSubnet Mask
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    6 days 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.






  • dbtng@eviltoast.orgtolinuxmemes@lemmy.worldSubnet Mask
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    6 days 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.