Is there an equivalent command for 'init.d/networking restart' in OS X

From time to time, I've encountered issues with OS X clients' network connections (Wired and Wireless, Leopard/Snow Leopard) where nothing will fix the issue, until you reboot.

• Is there a particular 'network service/process' I should be watching out for?
• I was thinking it would be useful to know of a command that will reset a 'network connection' type service/process (same as running a sudo /etc/init.d/networking restart).

After basic troubleshooting such as DHCP, DNS, checking for interface malfunction (disable/enable), checking logs and not finding enough helpful info, sometimes when everything else fails the best thing is just to reboot the machine. I'm not sure what all the 'init.d/networking restart' does in Linux, but I know it's way more helpful than disabling and enabling interfaces.

Thanks!

You can bring down the network interface and bring it back up again, that should accomplish the same thing.

sudo ifconfig en0 down
sudo ifconfig en0 up

No, there isn't an init.d/service/launchctl equivalent to 'init.d/networking'.

If it's wifi related, you can poke the interface from the command line (on SL) with: /System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport

If it's wired, use ifconfig.

Other then that... I would check dmesg and /var/log/* for errors.

You can also unload/reload the kld or check it for errors.., and reload it, but I've never tried that, I'd rather just reboot. :)

See:

kextfind(8) - find kernel extensions (kexts) based on a variety of criteria and print information
kextload(8) - load kernel extensions (kexts) into the kernel
kextunload(8) - terminate driver I/O Kit driver instances and unload kernel extensions (kexts)
kextutil(8) - load, diagnose problems with, and generate symbols for kernel extensions (kexts)