Results 1 to 3 of 3
  1. #1
    DHCP no longer works

    Member Since
    Mar 09, 2007
    Posts
    21
    Specs:
    White MB 13.3" / iPod Nano 2nd gen
    Unhappy DHCP no longer works
    Hello all,

    I've got an intel macbook, and since this evening I've got something strange going on: DHCP no longer works.

    Setting an ip address manually works fine, but using dhcp I either get:
    - Airport: no ip
    - Ethernet: the self-assigned 169.x.x.x ip.

    The router that's distributing the IP adresses works, I see them going out, and the PC's on the network work fine with DHCP:

    Code:
    Apr 11 20:38:30 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:38:32 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:38:32 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:38:35 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:38:35 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:38:39 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:38:39 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:38:47 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:38:47 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:38:56 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:38:56 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:39:05 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:39:05 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:39:13 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:39:13 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:39:22 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:39:22 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx
    But the macbook doesn't do anything with it.

    I've already tried rebooting the machine, didn't help.

    Any hints?

    Thanks.

  2. #2
    DHCP no longer works
    cwa107's Avatar
    Member Since
    Dec 20, 2006
    Location
    Lake Mary, Florida
    Posts
    26,758
    Specs:
    15" MBP, Core i7/2GHz, 8GB RAM, 480GB Crucial M500 SSD
    Quote Originally Posted by devilkin View Post
    Hello all,

    I've got an intel macbook, and since this evening I've got something strange going on: DHCP no longer works.

    Setting an ip address manually works fine, but using dhcp I either get:
    - Airport: no ip
    - Ethernet: the self-assigned 169.x.x.x ip.

    The router that's distributing the IP adresses works, I see them going out, and the PC's on the network work fine with DHCP:

    Code:
    Apr 11 20:38:30 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:38:32 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:38:32 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:38:35 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:38:35 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:38:39 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:38:39 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:38:47 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:38:47 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:38:56 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:38:56 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:39:05 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:39:05 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:39:13 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:39:13 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx 
    Apr 11 20:39:22 router daemon.info dnsmasq[166]: DHCPDISCOVER(br0) 00:19:e3:xx:xx:xx 
    Apr 11 20:39:22 router daemon.info dnsmasq[166]: DHCPOFFER(br0) 192.168.33.x 00:19:e3:xx:xx:xx
    But the macbook doesn't do anything with it.

    I've already tried rebooting the machine, didn't help.

    Any hints?

    Thanks.
    Have you recently hooked up more computers than normal to your network? Some routers will be set to only supply a handful of addresses at a time. If they run out of addresses, any computer requesting a new address will not get one and therefore assign an address in the APIPA range (169.254.0.0).

    Check your router's DHCP client lease length and the number of addresses in the pool. If the lease length is long (more than a day), it will not reassign a leased address until after the lease expires.
    Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!

    https://youtu.be/KHZ8ek-6ccc

  3. #3
    DHCP no longer works

    Member Since
    Mar 09, 2007
    Posts
    21
    Specs:
    White MB 13.3" / iPod Nano 2nd gen
    Thanks, but that's not it. I'm using statically assigned IP addresses (through DHCP), MAC's are correct and everything.

    I've just noticed that it doesn't happen while using another dhcp server, so it's probably an issue with my recently-reflashed broadband router that needs investigating.

    Sorry for the noise!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Battery No Longer Works?
    By ShoppingBro in forum Apple Notebooks
    Replies: 2
    Last Post: 12-20-2010, 05:09 AM
  2. cmd x,c and v no longer works
    By Edgar Lewis in forum OS X - Operating System
    Replies: 3
    Last Post: 12-05-2009, 07:25 PM
  3. QuickTime no longer works
    By adventuremotor in forum Switcher Hangout
    Replies: 2
    Last Post: 11-22-2009, 10:58 PM
  4. MS Office no longer works
    By kkempter in forum OS X - Apps and Games
    Replies: 1
    Last Post: 09-23-2008, 03:16 PM
  5. My iSight no longer works???
    By TheCustomer99 in forum Apple Notebooks
    Replies: 5
    Last Post: 09-20-2007, 05:41 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •