Mac terminal ifconfig release renew

Rob's answer will certainly work - but ipconfig set always first de-configures the interface before setting up DHCP again. I've never needed the first command - and ipconfig is much more high level it handles routes better than ifconfig and I prefer it for the case you state.

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The cli command "ipconfig set en0 DHCP" is not a dhcp-renew in the pure sense but a complete discover,offer,request,ack procedure. The "renew" button on the control pane just generates a dhcp-request preceded by a release and is answered by an ACK. There is a difference between both as renew is typically sent by a cpe at half the lease time to renew to lease before it expires.


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Internet access-devices like a cable modem termination system will react differently on both procedure. If possible how I could skip this password part and a standard user can run this command.

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How to renew IP Address on a MAC

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Post Your Answer Discard By clicking "Post Your Answer", you acknowledge that you have read our updated terms of service , privacy policy and cookie policy , and that your continued use of the website is subject to these policies. I have: And vice versa the other way round C. I believe ifconfig should do it.

Renew IP address from the Mac OS X Terminal

Remember that ifconfig is a tool to configure a network interface. You will usually have the en0 interface, which is the first ethernet card in your system. You will always have the lo0 interface, which is the loopback adaptor. And you may have a ppp0 interface which would be your dial-up modem interface.

In order to reconfigure the interface with a new ip address, you'll probably have to take it down ifconfig en0 down then give it a new ip address and bring it back up again ifconfig en0 Hope this is of some help, C. Your best bet is to set up locations in the GUI, then use the command line tool scselect to change locations.

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This script could then be made into a crontab to run on a regular basis, or you could run it at will from the command line. LordCoven Registered Sep 29, Hey there, Been digging a bit. Let me know what results you get PS: If it messes your interface configuration up all you have to do is switch from one location to the next to have the system configure the interface properly again - either with the apple menu or with the scselect command Cheers, C.

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Use SystemStarter to restart your network interface. This should have the net effect of renewing your network interface and obtaining a new DHCP lease, without having to resort to changing locations and back. LordCoven Registered Oct 2, I'm running