ipconfig

The command is available in Microsoft Windows, ReactOS, and in Apple macOS. The ReactOS version was developed by Ged Murphy and is licensed under the GPL.{{Cite web|url=https://github.com/reactos/reactos/blob/master/base/applications/network/ipconfig/ipconfig.c|title = Reactos/Ipconfig.c at master · reactos/Reactos|website = GitHub}}

The ipconfig command supports the command-line switch /all. This results in more detailed information than ipconfig alone.

An important additional feature of ipconfig is to force refreshing of the DHCP IP address of the host computer to request a different IP address. This is done using two commands in sequence. First, ipconfig /release is executed to force the client to immediately give up its lease by sending the server a DHCP release notification which updates the server's status information and marks the old client's IP address as "available". Then, the command ipconfig /renew is executed to request a new IP address.[http://www.wikihow.com/Refresh-Your-IP-Address-on-a-Windows-Computer Release and Renew Your IP Address][https://kb.wisc.edu/page.php?id=562 Windows – Displaying, Releasing and Renewing a DHCP Lease] Where a computer is connected to a cable or DSL modem, it may have to be plugged directly into the modem network port to bypass the router, before using ipconfig /release and turning off the power for a period of time, to ensure that the old IP address is taken by another computer.[http://whatismyipaddress.com/change-ip whatsmyipaddress: How to change your IP address]

The /flushdns parameter can be used to clear the Domain Name System (DNS){{Citation |title=Domain Name System (DNS) |work=Understanding IPv6 |pages=151–172 |url=http://dx.doi.org/10.1007/0-387-25614-8_9 |access-date=2024-03-06 |place=New York |publisher=Springer-Verlag |isbn=0-387-25429-3}} cache to ensure future requests use fresh DNS information by forcing hostnames to be resolved again from scratch.[http://blog.fmsinc.com/windows-8-1-pcs-connect-to-the-network-but-not-the-internet/ Windows 8.1 PCs Connect to the Network but not the Internet])

ipconfig in Mac OS X serves as a wrapper to the IPConfiguration agent, and can be used to control the Bootstrap Protocol and DHCP client from the command-line interface.[https://developer.apple.com/documentation/Darwin/Reference/ManPages/man8/ipconfig.8.html OS X developer manual] For example, you can release and renew an IP address if it happened to be assigned incorrectly by the DHCP server during the automated assignment process.{{Cite web |title=Ipconfig – network administration via the command line |url=https://www.ionos.ca/digitalguide/server/configuration/ipconfig/ |access-date=2022-08-23 |website=IONOS Digitalguide |language=en}} Like most Unix-based operating systems, Mac OS X also uses ifconfig for more direct control over network interfaces, such as configuring static IP addresses. The Ifconfig command in Linux has been replaced by the IP command

• ifconfig

{{Reflist}}

• {{Cite book|first=Æleen|last=Frisch|year=2001|title=Windows 2000 Commands Pocket Reference|publisher=O'Reilly|isbn=978-0-596-00148-3}}
• {{Cite book |first=William R. |last=Stanek |year=2008 |title=Windows Command-Line Administrator's Pocket Consultant, 2nd Edition |publisher=Microsoft Press |isbn=978-0735622623}}
• {{Cite book|first=Daniel J.|last=Barrett|year=2012|title= Off Macintosh Terminal Pocket Guide: Take Command of Your Mac|publisher=O'Reilly|isbn=}}

{{Wikibooks|Guide to Windows Commands}}

• Windows
• [https://technet.microsoft.com/en-us/library/bb490921.aspx Microsoft TechNet Ipconfig article]
• [http://variableghz.com/2008/09/getting-serious-about-vnc/ VariableGHz article detailing ipconfig settings in Vista]
• [http://www.computerhope.com/ipconfig.htm Windows 95, 98, ME; Windows 2000 and XP MS-DOS shell syntax]
• [https://docs.microsoft.com/en-us/windows-server/administration/windows-commands/ipconfig ipconfig] documentation for Windows
• Mac OS X
• {{man|8|ipconfig|Darwin|view and control IP configuration state}}

{{Windows commands}}

Category:Windows communication and services

Category:Windows administration

Category:MacOS-only software made by Apple Inc.