DHCP Setting in Mac OS X

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Solution 1

You may use

networksetup -listallnetworkservices
networksetup -getinfo <networkservice>
networksetup -setdhcp <networkservice> [clientid]

networkservice is something like Ethernet (all availabe listed by the first command)

Solution 2

You can also use:

ipconfig getpacket `interface`

where interface would be en0, en1 etc.

ie:

ipconfig getpacket en1
op = BOOTREPLY
htype = 1
flags = 0
hlen = 6
hops = 0
xid = 215448168
secs = 3
ciaddr = 0.0.0.0
yiaddr = 192.168.15.121
siaddr = 0.0.0.0
giaddr = 0.0.0.0
chaddr = 0:19:e3:6:70:95
sname = 
file = 
options:
Options count is 8
dhcp_message_type (uint8): ACK 0x5
server_identifier (ip): 192.168.15.1
lease_time (uint32): 0xa8c0
subnet_mask (ip): 255.255.255.0
router (ip_mult): {192.168.15.1}
domain_name_server (ip_mult): {192.168.15.249, 192.168.15.240}
domain_name (string): domain.com
end (none): 

You can also do:

ipconfig getoption en0 optionname

ie: ipconfig getoption en1 router

192.168.15.1
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benc
Author by

benc

Updated on June 07, 2022

Comments

  • benc
    benc over 1 year

    Are there any command line interfaces to the DHCP settings in Mac OS X? I have found that inside System Profiler, the Network tab provides a lot of useful information, but I have not found any documentation about any command line equivalents.

  • benc
    benc almost 15 years
    neintro is not on my Mac, and I have used ifocnfig and netstat extensively, they don't appear to do anything w/ DHCP.
  • Jason Coco
    Jason Coco almost 15 years
    netintro is not a program, it's in section 4 of the manual, it's information about how to configure your network. I made that clear in my response.
  • benc
    benc almost 15 years
    "The IPConfiguration agent implements the client side of the DHCP and BOOTP protocols described in RFC951, RFC1542, RFC2131, and RFC2132. It also assigns and maintains static IP addresses." I don't know why this could not be found by google or man -k, but many thanks.
  • benc
    benc over 14 years
    I finally had time to look at this command, and it gets the job done!