[Non-original]OS X How do I unset an IP address set with ifconfig?
I recently used ifconfig en1 1.2.3.4
to set the IP address of a network interface (specifically, the wireless card) on a Mac… How can I remove/unset it?
Using the graphical network configuration tool doesn't seem to change (or even be aware of) this address - when I use it to manually set an address, a second address is added to the device.
For example, right now ifconfig
shows:
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
ether 00:23:xx:xx:xx:xx
inet 192.168.141.99 netmask 0xffffff00 broadcast 192.168.141.255
inet 192.168.1.112 netmask 0xffffff00 broadcast 192.168.1.255
media: autoselect
status: active
The first address - 141.99
- is the address I manually set. The second address — 1.112
— is the address assigned by my network's DHCP server.
Use delete
:
ifconfig en1 delete 192.168.141.99
Sounds like you are looking to change the device en1 from 'static' to 'dhcp'. To do this perform the following:
sudo ifconfig en1 BOOTP
sudo ifconfig en1 DHCP
After making the config changes you will need to bring that interface down and back up:
sudo ifconfig en1 down
sudo ifconfig en1 up
origina:
http://apple.stackexchange.com/questions/25895/how-do-i-unset-an-ip-address-set-with-ifconfig
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