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A Microsoft Windows program to display information about the the computer's Internet Protocol settings, including IP address, DHCP lease information, network card Ethernet address, and DNS information.

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(Internet Protocol CONFIGuration) A Windows command line utility that is used to manage the IP address assigned to the machine it is running in. Used without any additional parameters, it displays the computer's currently assigned IP, subnet mask and default gateway addresses. IPCONFIG has several command line switches (parameters) preceded with a slash (see list below). The Mac counterpart is IFCONFIG. See NSLOOKUP and netstat.


 no switch      IP, subnet mask & default
                 gateway addresses

 /all           the above +
                 hostname, MAC address,
                 DNS server addresses, etc.

 /displaydns    contents of DNS cache

 /showclassid   all DHCP class IDs
                 for adapter

 Management     Action

 /release       release IP address

 /renew         renew IP address

 /flushdns      purge DNS cache

 /registerdns   refresh leases & 
                 reregister DNS

 /setclassid    update DHCP class ID
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