12 Replies Latest reply: Jun 2, 2008 4:01 PM by gregmote
bikuta Level 1 Level 1 (0 points)
Hi guys,

Recently I haven't been able to use the internet using airport (wireless), it seems to connect fine, i.e., the airport bars turn black. However I don't get an IP, not even a local one.

I know there's nothing wrong with the router because other macs connect to it just fine.

Anyone have any ideas on what's wrong?

PowerBook G4, Mac OS X (10.5.2)
  • 1. Re: Airport connects but not receiving an IP
    piersons Level 1 Level 1 (0 points)
    I am having this same problem. The DHCP won't renew a lease and I keep getting a 'self-assigned IP address' that is not related to the IP addresses on my home network. This happens with Airport and ethernet. Sees the network, other computers on the network all work flawlessly, but the Powerbook isn't getting an IP address for my local network. Any ideas?
  • 2. Re: Airport connects but not receiving an IP
    jskodack Level 1 Level 1 (5 points)
    I am having the same exact issue. I can solve this issue sometimes by just shutting down the system and unplugging it from the AC adapter for an hour or so to let it cool down. However, I would like a solution to fix this.
  • 3. Re: Airport connects but not receiving an IP
    jskodack Level 1 Level 1 (5 points)
    Ok, I just tried about everything (reseting PMU, PRAM, NVRAM, cycle through safe boot) and nothing worked. As a random check, I turned off my firewall and low and behold airport can negotiate IP addresses again. yay....
  • 4. Re: Airport connects but not receiving an IP
    piersons Level 1 Level 1 (0 points)
    Ahhh...you cracked it! The firewall switch worked for me, too. Good times. Thanks!
  • 5. Re: Airport connects but not receiving an IP
    bikuta Level 1 Level 1 (0 points)
    Which firewall switch are you guys talking about?

    I've turned off my firewall from System Preferences > Security > Firewall
    It's set to allow all incoming connections, but wireless still not working.
  • 6. Re: Airport connects but not receiving an IP
    piersons Level 1 Level 1 (0 points)
    After you do that, you then need to go back to the network settings and click the button to renew the DHCP lease, assuming your DHCP is set to automatic and not manual.

    Hope that helps!
  • 7. Re: Airport connects but not receiving an IP
    bikuta Level 1 Level 1 (0 points)
    hmm I tried the renew DHCP license but it still doesn't work
    did you have to do a reboot?

    btw I think my firewall was never on in the first place.
  • 8. Re: Airport connects but not receiving an IP
    piersons Level 1 Level 1 (0 points)
    I would definitely try restarting if you haven't already, and maybe turning Airport off and on..Otherwise I'm back to being stumped. Mine's working swell now. Sorry to hear yours isn't...
  • 9. Re: Airport connects but not receiving an IP
    bikuta Level 1 Level 1 (0 points)
    Well the bad news is I didn't get it to work after restarting.

    The good news is it's now working after a PRAM reset. woohoo!

    Message was edited by: bikuta
  • 10. Re: Airport connects but not receiving an IP
    lganso Level 1 Level 1 (5 points)
    I've just been on this forum looking for hints on how to fix the very same problem re: subject...tried everything everyone suggested...no go...finally in desperation I logged onto the modem using another computer and reset my encryption code...same setting...all I did is delete it and then put it back in...everything works...hope this helps...
  • 11. Re: Airport connects but not receiving an IP
    Christopher Meinck Level 1 Level 1 (110 points)
    Just curious, is everyone here running Leopard. I never had these problems until Leopard. Now, I've got the same problem using my home network (FIOS) and recently while on vacation. I called AppleCare and they were zero help. They blamed it on the router and said they didn't support the Verizon ActionTec router. Fast forward a few weeks and I'm having the same issue while on vacation. I've seen solutions here mentioning a change in encryption. This network has no password, so that fix doesn't work. I deleted the connection, turned off Airport and then rebooted. I enabled Airport and then it found the connection. Right now, it seems like it's hit or miss with connections. Not very good for me considering I rely on my internet connection for business. Not happy.
  • 12. Re: Airport connects but not receiving an IP
    gregmote Level 1 Level 1 (0 points)
    I had the same issue, and it took forever to narrow it down to being a DHCP issue. Why is the firewall blocking DHCP, that seems rather silly. At least I am back on the internet. Now to see what happens when I turn the firewall back on...