A number of our client machines are set to get DHCP leases for their
IP addresses, however they have their DNS server addresses manually
entered in System Preferences. I'd like to change this and have the
DNS servers assigned by DHCP, however I'm running into a bit of a
problem. I can use the "Send UNIX command" to change the DNS entries
from one set of manual IPs to another, but I have no idea how I'm
supposed to say "Use DHCP instead".
to set a manual IP, but if I want to use DHCP then what I want is to /
clear/ the address listed. But, if I send either no IP addresses, a
pair of single quotes or a pair of double quotes, networksetup
complains. Does anyone know how to do what I'm referring to? To
accomplish the functionality I want through the OS X GUI, you just
launch Network settings from System Preferences and, so long as
you're using DHCP, clear whatever manual IP addresses are defined for
DNS servers. OS X knows to automagically use the DHCP-supplied ones
if you do that.
Any ideas?
Thanks,
Chris
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