airport IP address problem

Discussion in 'Mac Accessories' started by vintagemetro, Aug 25, 2006.

  1. vintagemetro macrumors newbie

    Aug 25, 2006
    Hi everyone,

    Long time lurker finally joins the board thanks to an annoying Airport problem! I couldn't find anything quite like this through my searches.

    I've got the dual-ethernete (snow) airport basestation connected to a cable modem and have been having a problem with the IP address. For some reason, the IP address I have has been blacklisted ( and the only problem is I can't send email through Mail on my PowerBook or Outlook on my PC laptop.

    I'm using the DHCP auto option, but my 'bad' IP address is listed in the grayed out area in the Airport Admin program. If I connect directly to the cable modem (without using the Airport), I can renew the DHCP lease and get a new IP address. It's only when using the Airport that it always goes back to the 'bad' address. I've even tried copying the settings from when I directly connect into the Airport, but it doesn't help.

    Is there any way to clear the preferences or Airport memory of this 'bad' address? I've already tried reinstalling the firmware and the various hard restarts.

    Any ideas to fix this problem? It all worked fine in May, then I suspended my service while out of town for the summer. When I got back, I could no longer send mail through any email programs.

    If there isn't a fix, is there a workaround (proxy?)? :confused:

    Much appreciated.
  2. Demoman macrumors regular

    Mar 29, 2005
    Issaquah, WA
    I am not sitting at an Apple right now and I may be misunderstanding your problem. But, cannot you change from DHCP and enter a valid static IP for your subnet? I do not know your router, but many allow you to set an IP 'range' for DHCP services.
  3. vintagemetro thread starter macrumors newbie

    Aug 25, 2006
    when I have unchecked the 'distribute IP addresses' box and saved/restarted the Airport, it has locked up and required the whole direct connection method to make it work again. The usual Admin program didn't even detect it.

    It's just bizarre since it was working fine and has been great for several years, now somehow I've gotten a bad IP address.

    The funny thing is that when I talked to my campus tech support, I was told that my PC was sending spam from that address. This doesn't make any sense because the IP address is the Airport.
  4. vintagemetro thread starter macrumors newbie

    Aug 25, 2006

    Here's a follow up post in case anyone else has issues with Charter.

    It turned out to be quite simple, I just needed to leave the modem unplugged for several days. I had tried leaving it off overnight, but when I left for Labor day, I unplugged it. Three days later, my airport was assigned a new IP address and my email problems dissappeared.

    My biggest complaint is that I was on the phone with Charter 2 times for 20-30 minutes each time and their "help" couldn't figure this out!!! They were useless and I wasted a lot of time dealing with this issue.

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