For those who want to try it at home:

ping 33333333
ping 55555555

I am sorry, two random Internet users in Korea and Germany, your IP addresses are simply special.

  • SpiceDealer@lemmy.dbzer0.com
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    1 hour ago

    I’m probably going to get downvoted to hell but I have to ask: Can someone please explain? I’m perpetually trying to expand my knowledge on the technical side of Linux.

    • Fred@programming.dev
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      47 minutes ago

      This is the behaviour of inet_aton, which ping uses to translate ASCII representations of IPv4 addresses to a 32 bit number. Its manpage: https://man7.org/linux/man-pages/man3/inet_aton.3.html

      It recognizes the usual quad decimal notation of course, but also addresses of the form a.b.c or a.b, or in this instance, a, with is taken to be a 32bit number.

      Each part can also be written in hex or octal, with the right prefix, such that 10.012.0x800a is as valid form for 10.10.128.10.

      Not all software use inet _aton to translate ASCII addresses. inet_pton for instance (which understands both v4 and v6) doesn’t

    • jaupsinluggies@feddit.uk
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      60 minutes ago

      An IP address is a 32-bit number, usually expressed as four 8-bit numbers separated by dots. Converting 33333333 to hex we get 01FCA055; splitting that into pairs and converting back to decimal gives 1, 252, 160, 85.

    • NoFood4u@sopuli.xyz
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      1 hour ago

      Typically an IP address is represented as 4 8-bit integers (1.252.160.85), but it can also be represented as a single 32-bit integer (33333333). The ping utility accepts both forms.

  • Itdidnttrickledown@lemmy.world
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    10 hours ago

    Also two random internet users in Korea and Germany, your IP addresses are blocked by mail server since I started getting phishing emails from your country.

    • wetbeardhairs@lemmy.dbzer0.com
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      1 day ago

      it’s so simple!

      
      ping -c 4 $(mysql -u frodo -p keepyoursecrets -D /home/pingtargets.db -se "SELECT ip FROM servers ORDER BY RAND() LIMIT 1;")
      
  • underscores@lemmy.zip
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    21 hours ago

    Obligatory: Fuck Drake.

    There are dozens of meme templates like this that you could have used instead

      • Treczoks@lemmy.world
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        1 day ago

        Yes, but you can write it in different ways. If the numeric string contains a dot, left of it must be between 0 and 255, and is put in the highest byte of the address. If the rest also contains a dot, repeat, but put it into the second highest byte.

        BUT: if the string does not contain a dot, the number is put into the remaining bytes.

        So 123.256 is a valid address. The 123 goes into the top byte, the 256 goes into the remaining three bytes, so the address would be 123.0.1.0.

        Most common example is 127.1, which is short for 127.0.0.1 - the localhost address.

        • Treczoks@lemmy.world
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          5 hours ago

          In nearly forty-ish years on the internet (yes, I was around before the web), I have not seen someone expressing an internet address in octal (before this discussion), although I remember that it is legal. Using hex, yes, but not octal.

      • remotelove@lemmy.ca
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        1 day ago

        255

        Small correction, but an important one: 0 is a number too.

        In terms of IP masking and broadcast addresses, the max is 255.255.255.255

        • Chris@lemmy.world
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          1 day ago

          Oof of course. 256 entries from 0 - 255.

          It’s been a long long time since my ccent

  • dihutenosa@feddit.nl
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    1 day ago

    Or, if you’re me,

    $ ping 16843009                
    PING 16843009 (1.1.1.1) 56(84) bytes of data.           
    64 bytes from 1.1.1.1: icmp_seq=1 ttl=53 time=4.06 ms   
    64 bytes from 1.1.1.1: icmp_seq=2 ttl=53 time=4.04 ms   
    64 bytes from 1.1.1.1: icmp_seq=3 ttl=53 time=4.05 ms   ^C                                                      
    --- 16843009 ping statistics ---                        
    3 packets transmitted, 3 received, 0% packet loss, time 2003ms                                                  
    rtt min/avg/max/mdev = 4.044/4.053/4.062/0.007 ms
    
      • yardratianSoma@lemmy.ca
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        1 day ago

        interesting . . In my head, I think of ip addresses like just decimal values or integers separated by periods, but clearly a decimal value isn’t processed as such by a computer. To think that IP addresses are simply strings is pretty interesting to my amateur mind, because for all my life I thought of them as technical computer jargon that isn’t the same as what I used to think strings were: words!

        • remotelove@lemmy.ca
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          1 day ago

          I don’t want to go so far as to tell you how to think, but as long as we are talking about how to visualize IP addresses, you may want to check out subnets and subnet masking.

          The notation of IP addresses starts to make sense when you think about the early days of TCP/IP when all IP addresses were public and NAT’ing wasn’t really required yet. Basically, there needed to be ways for networks to filter traffic by IP blocks that were applicable. (It was [in part] a precursor to collision avoidance, but absolutely not the full story.) We still use addressing and masking today, but it’s more obvious when it’s local. (Like in data centers, where it’s super practical to mask off a block of addresses for a row or rack of servers.)

          To your point, yeah. IP addresses are probably more comparable to the Dewey Decimal System rather than actual numbers and thinking of them as strings is probably easier.

          • yardratianSoma@lemmy.ca
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            1 day ago

            Oh no worries, I am writing a Cisco networking exam in about a month, so I’ve actually studied subnets and addressing a good amount, but I don’t mind the refresher!

            I was just speaking more generally, in terms of programming, where integers and strings are different data types, yet you can store numbers as a string, which I always found interesting.