IP address conundra

When Mood Music
2012-06-07 23:18:00 pensive FriComedy: 01 Jun 12: The News Quiz – BBC Radio 4

Why

  • did I spend an hour compiling a list of IP addresses in this flat?
  • doesn’t the DHCP server in the modem/router assign IP addresses from a base address upwards? Here’s a list:
    IP address Device Port
    xxx.xxx.xxx.65 TimeCapsule ethernet
    xxx.xxx.xxx.66 TV ethernet
    xxx.xxx.xxx.67 DVD player ethernet
    xxx.xxx.xxx.68
    xxx.xxx.xxx.69
    xxx.xxx.xxx.70 MacPro ethernet
    xxx.xxx.xxx.71 netbook airport
    xxx.xxx.xxx.72 jPhone-3GS airport
    xxx.xxx.xxx.73 AppleTV ethernet
    xxx.xxx.xxx.74 AirportExpress ethernet
    xxx.xxx.xxx.75 iPad 1 ethernet
    xxx.xxx.xxx.76 iMac airport
    xxx.xxx.xxx.77 Netbook ethernet
    xxx.xxx.xxx.78 Powerbook G3 ethernet
    xxx.xxx.xxx.79
    xxx.xxx.xxx.80 TiBook ethernet
    xxx.xxx.xxx.81
    xxx.xxx.xxx.82
    xxx.xxx.xxx.83 TiBook airport
    xxx.xxx.xxx.84
    xxx.xxx.xxx.85
    xxx.xxx.xxx.86
    xxx.xxx.xxx.87
    xxx.xxx.xxx.88
    xxx.xxx.xxx.89 printer ethernet
    xxx.xxx.xxx.90
    xxx.xxx.xxx.91
    xxx.xxx.xxx.92 Xserve ethernet 1
    xxx.xxx.xxx.93
    xxx.xxx.xxx.94
    xxx.xxx.xxx.95
    xxx.xxx.xxx.96
    xxx.xxx.xxx.97
    xxx.xxx.xxx.98
    xxx.xxx.xxx.99
    xxx.xxx.xxx.100
    xxx.xxx.xxx.101
    xxx.xxx.xxx.102
    xxx.xxx.xxx.103 iPad 3 airport
    xxx.xxx.xxx.104 jPhone-4 airport
    xxx.xxx.xxx.105
    xxx.xxx.xxx.106
    xxx.xxx.xxx.107
    xxx.xxx.xxx.108 iPhone-4 airport
    xxx.xxx.xxx.109 kindle airport
    xxx.xxx.xxx.110
    xxx.xxx.xxx.111
    xxx.xxx.xxx.112
    xxx.xxx.xxx.113 NAS ethernet

     

    There has never been (113 − 64 =) 49 devices attached to this router.

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