Configure IP.

Syntax

  IPCONFIG /all         Display full configuration information.

  IPCONFIG /release [adapter]
                        Release the IP address for the specified adapter.

  IPCONFIG /renew [adapter]
                        Renew the IP address for the specified adapter.

  IPCONFIG /flushdns    Purge the DNS Resolver cache. ##

  IPCONFIG /registerdns Refresh all DHCP leases and re-register DNS names. ##

  IPCONFIG /displaydns  Display the contents of the DNS Resolver Cache. ##

  IPCONFIG /showclassid adapter
                        Display all the DHCP class IDs allowed for adapter. ##

  IPCONFIG /setclassid  adapter [classid]
                        Modify the dhcp class id. ## 

## = New option in Win 2K/XP

If the Adapter name contains spaces, use quotes: "Adapter Name"
wildcard characters * and ? allowed, see the examples below

The default is to display only the IP address, subnet mask and default gateway for each adapter bound to TCP/IP.

For Release and Renew, if no adapter name is specified, then the IP address leases for all adapters bound to TCP/IP will be released or renewed.

For Setclassid, if no ClassId is specified, then the ClassId is removed.

Examples:
    > ipconfig                   ... Show information.
    > ipconfig /all              ... Show detailed information
    > ipconfig /renew            ... renew all adapters
    > ipconfig /renew EL*        ... renew any connection that has its 
                                     name starting with EL

    > ipconfig /release *Con*    ... release all matching connections,
                                     eg. "Local Area Connection 1" or
                                         "Local Area Connection 2"

    > ipconfig /setclassid "Local Area Connection" TEST 
                                 ... set the DHCP class ID for the 
                                     named adapter to = TEST