• dbtng@eviltoast.org
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        6 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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          5 hours ago

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

          • dbtng@eviltoast.org
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            19 minutes ago

            Ah. Well that’s nonsense, but it is a take on the graphic with some internal cohesion.