1 2 Previous Next 29 Replies Latest reply: Apr 27, 2009 2:29 PM by direwolf8
Andrew.Johnstone Level 1 Level 1 (0 points)
Hi,

I keep getting disconnected from my wireless router and all other wireless windows machines seem to get kicked off the wireless network when I connect. The wireless network is unusable and I can only see errors in the logs below. Can anyone point me in the right direction as there are no updates currently to download?

System Version: Mac OS X 10.5 (9A581)
Kernel Version: Darwin 9.0.0

andrew@andrew-johnstones-computer ~$ sudo watch -n1 "tail /var/log/system.log |egrep -v /var/log/system.log"

Nov 25 12:33:31 andrew-johnstones-computer com.apple.launchd[265] (com.apple.NetworkDiagnostics[4275]): Check-in of Mach service failed. Already active: com.apple.NetworkDiagnostic.agent
Nov 25 12:33:32 andrew-johnstones-computer ntpd[25]: sendto(17.72.133.45) (fd=23): Network is unreachable
Nov 25 12:33:39 andrew-johnstones-computer Software Update[4301]: arguments=(null)
Nov 25 12:34:08 andrew-johnstones-computer com.apple.launchd[1] (com.apple.installdb.system): Throttling respawn: Will start in 4 seconds
Nov 25 12:35:28 andrew-johnstones-computer airportd[4626]: Error: Apple80211Associate() failed -6
Nov 25 12:35:28 andrew-johnstones-computer SystemUIServer[2340]: Error: airportd MIG failed = -6 ((null)) (port = 46103)
Nov 25 12:35:41 andrew-johnstones-computer ntpd[25]: sendto(17.72.133.45) (fd=23): Network is unreachable
Nov 25 12:36:32 andrew-johnstones-computer login[4829]: USER_PROCESS: 4829 ttys001
Nov 25 12:36:37 andrew-johnstones-computer mDNSResponder[15]: Note: Frequent transitions for interface en1 (192.168.1.3); network traffic reduction measures in effect
Nov 25 12:36:37 andrew-johnstones-computer mDNSResponder[15]: Note: Frequent transitions for interface en1 (FE80:0000:0000:0000:0214:51FF:FEED:5403); network traffic reduction measures in effect


Airport configuration.

AirPort:
Type: IEEE80211
BSD Device Name: en1
Hardware (MAC) Address: 00...
IPv4:
Configuration Method: DHCP
IPv6:
Configuration Method: Automatic
AppleTalk:
Configuration Method: Node
Node: Node
Proxies:
Proxy Configuration Method: 2
Exclude Simple Hostnames: No
FTP Passive Mode: Yes
Auto Discovery Enabled: No
IEEE80211:
Allow Net Creation: Yes
Disconnect On Logout: No
InterferenceRobustness: 1
Join Mode: Automatic
JoinModeFallback: Prompt
MAC Address: 00:...
PowerEnabled: 1
PreferredNetworks:
SecurityType: WPA Personal
SSID_STR: NETGEAR_NEXT
Unique Network ID: 3...
Unique Password ID: 9...
SecurityType: Open

MacBook Pro, Mac OS X (10.5)
  • 1. Re: frequent transitions for interface en1 - network traffic reduction meas
    Rembert Oldenboom Level 1 Level 1 (0 points)
    I have the same issue, occasionally. No idea why. It does freeze my Firefox.
  • 2. Re: frequent transitions for interface en1 - network traffic reduction meas
    Odwalla Level 1 Level 1 (10 points)
    Similar problem here. The Airport icon in my menubar will sometimes flicker on and off forever. Heres what Console shows:

    1/9/08 8:41:26 AM mDNSResponder[16] Note: Frequent transitions for interface en1 (FE80:0000:0000:0000:021B:63FF:FECB:05A6); network traffic reduction measures in effect
    1/9/08 8:41:26 AM mDNSResponder[16] Note: Frequent transitions for interface en1 (FE80:0000:0000:0000:021B:63FF:FECB:05A6); network traffic reduction measures in effect
    1/9/08 8:41:28 AM configd[14] AppleTalk startup
    1/9/08 8:41:33 AM mDNSResponder[16] Note: Frequent transitions for interface en1 (FE80:0000:0000:0000:021B:63FF:FECB:05A6); network traffic reduction measures in effect
    1/9/08 8:41:33 AM mDNSResponder[16] Note: Frequent transitions for interface en1 (FE80:0000:0000:0000:021B:63FF:FECB:05A6); network traffic reduction measures in effect
    1/9/08 8:41:34 AM configd[14] AppleTalk startup complete
    1/9/08 8:41:34 AM configd[14] AppleTalk shutdown
    1/9/08 8:41:34 AM configd[14] AppleTalk shutdown complete
    1/9/08 8:41:34 AM configd[14] AppleTalk startup
    1/9/08 8:41:36 AM mDNSResponder[16] Note: Frequent transitions for interface en1 (FE80:0000:0000:0000:021B:63FF:FECB:05A6); network traffic reduction measures in effect
    1/9/08 8:41:36 AM mDNSResponder[16] Note: Frequent transitions for interface en1 (FE80:0000:0000:0000:021B:63FF:FECB:05A6); network traffic reduction measures in effect
    1/9/08 8:41:40 AM configd[14] AppleTalk startup complete
    1/9/08 8:41:40 AM configd[14] AppleTalk shutdown
    1/9/08 8:41:40 AM configd[14] AppleTalk shutdown complete
    1/9/08 8:41:40 AM configd[14] AppleTalk startup
    1/9/08 8:41:46 AM configd[14] AppleTalk startup complete
    1/9/08 8:41:46 AM configd[14] AppleTalk shutdown
    1/9/08 8:41:46 AM configd[14] AppleTalk shutdown complete
    1/9/08 8:41:46 AM configd[14] AppleTalk startup
    1/9/08 8:41:47 AM mDNSResponder[16] Note: Frequent transitions for interface en1 (FE80:0000:0000:0000:021B:63FF:FECB:05A6); network traffic reduction measures in effect
  • 3. Re: frequent transitions for interface en1 - network traffic reduction measures
    jstass Level 1 Level 1 (10 points)
    Hey Andrew:

    Not sure if this will help you, but worked for me. I get/was getting the same message on my home router. Funny on other routers seems to work fine. Drop outs for no apparent reason, but especially after waking from sleep or screen saver...

    1. In my router I reserved an IP address for my computer. (For what it's worth, I have a netgear WGR614 - I have WEP enabled.)
    2. In network properties on the mac I changed the IP from automatically configuring to manaually entering it. Put in the IP, subnet mask, and router IP manually.
    3. Turned off IPV6.
    4. In the DNS tab I manually put in my router IP.

    Works fine now no issues. If I am travelling or using another wireless access point, I switch the settings in network back to automatic.

    Hope this helps. I haven't had a single problem with drop outs since setting this up.

    John
  • 4. Re: frequent transitions for interface en1 - network traffic reduction meas
    tomasvdh Level 1 Level 1 (0 points)
    I have a D-Link DI-524 wireless router. In Tiger, my computer sometimes would not connect to the router and I had many wifi related problems. Since Leopard, there is only one - HUGE - problem left. Whenever I'm not close to my router and start downloading something, the wifi link disconnects and reconnects almost constantly. It has even become impossible to chat with people through Adium X (a free IM client, I use it for MSN). It gives the same messages in /var/log/system.log and I believe it's a problem that a lot of mac users face. I've been going crazy over this for months. Since I bought my MBP in August 2006, I haven't really had a reliable wifi connection, while other people's laptops would be fine on my home network... In my opinion this is a serious flaw in Apple's products and it's the only thing keeping me from saying that Apple computers are superior to most others... For everything except the wifi implementation in OS X, I'm glad I switched to the mac

    And now, thanks to jstass idea of using a static IP, it appears to be solved!!! I can't thank you enough and I would suggest Apple engineers to focus on the DHCP part of the Airport driver, since this problem
    1) is clearly software related
    2) has something to do with using dynamic IP's via DHCP
    Mind you though that it doesn't happen when the signal is very strong.

    Thanks again to jstass!
  • 5. Re: frequent transitions for interface en1 - network traffic reduction meas
    tomasvdh Level 1 Level 1 (0 points)
    Fix seems to have been temporary only. It's as bad as it was again :/
  • 6. Re: frequent transitions for interface en1 - network traffic reduction meas
    SnappleBOi Level 1 Level 1 (0 points)
    Same problem here. One thing I did that seemed to have an immediate positive effect was changing the NetBOIS name my computer was using.

    Just go to network preferences, click advanced, under the "WINS" area....
  • 8. Re: frequent transitions for interface en1 - network traffic reduction measures
    Sorthum Level 1 Level 1 (0 points)
    I'm seeing the same issues here.

    Prior to this happening (around when I upgraded to 10.5.2) I was seeing TKIP intrusion detection firing off in system.log on several networks-- the Mac would retaliate by shutting off wireless for a minute or better. The "Genius" at the Mac Store wanted to replace the wireless card, but I wasn't willing to part with the machine for the weeklong backlog they were having when I asked about it. Be interested to see if this problem's been seen by anyone else.
    It's also worth mentioning that I have VMware Fusion on this box, which delights in filling the logs with wonderful vmnet messages...
  • 9. Re: frequent transitions for interface en1 - network traffic reduction meas
    kenhotto Level 1 Level 1 (0 points)
    Same problem - not able to contact to internet with a certain router (telewell TW-EA1000) - wired or wireless. Manual IP-address setup solved it. Thank you VERY much for this info. It was driving me crazy, as my PB12 connected to other routers. Very tricky indeed - I would never had guessed the solution.
  • 10. Re: frequent transitions for interface en1 - network traffic reduction meas
    Phil Ruff Level 1 Level 1 (5 points)
    FYI, I am just adding information and questions to the post...I have not found a solution yet....

    I am seeing the same issues...'frequent transitions..'...followed by 'TKIP MIC failure....'....

    Jun 24 15:57:41 xy01l484 mDNSResponder[23]: Note: Frequent transitions for interface en1 (FE80:0000:0000:0000:0216:CBFF:FEBD:A49A); network traffic reduction measures in effect
    Jun 24 15:57:45 xy01l484 kernel[0]: AirPort: Link Up on en1
    Jun 24 15:57:45 xy01l484 mDNSResponder[23]: Note: Frequent transitions for interface en1 (FE80:0000:0000:0000:0216:CBFF:FEBD:A49A); network traffic reduction measures in effect
    Jun 24 15:57:45 xy01l484 mDNSResponder[23]: Note: Frequent transitions for interface en1 (10.0.24.65); network traffic reduction measures in effect
    Jun 24 15:58:18 xy01l484 kernel[0]: en1: Pairwise TKIP MIC failure reported!
    Jun 24 15:58:18: --- last message repeated 1 time ---
    Jun 24 15:58:18 xy01l484 kernel[0]: en1: TKIP countermeasures enabled.
    Jun 24 15:58:18 xy01l484 mDNSResponder[23]: Note: Frequent transitions for interface en1 (10.0.24.65); network traffic reduction measures in effect
    Jun 24 15:58:18 xy01l484 mDNSResponder[23]: Note: Frequent transitions for interface en1 (FE80:0000:0000:0000:0216:CBFF:FEBD:A49A); network traffic reduction measures in effect
    Jun 24 15:58:18 xy01l484 mDNSResponder[23]: Note: Frequent transitions for interface en1 (10.0.24.65); network traffic reduction measures in effect
    Jun 24 15:58:21 Macintosh configd[35]: setting hostname to "Macintosh.local"
    Jun 24 15:58:21 Macintosh NoteTaker[657]: not connected to internet
    Jun 24 15:58:23 Macintosh mDNSResponder[23]: Note: Frequent transitions for interface en1 (FE80:0000:0000:0000:0216:CBFF:FEBD:A49A); network traffic reduction measures in effect
    Jun 24 15:58:32 Macintosh eapolclient[804]: en1 STOP

    Then, of course, "The wireless network appears to have been compromised and will be disabled for about a minute".

    In some cases, I can log back in after a few minutes, but once I could no longer log into the network(WPA Enterprise). After messing with it for a while, I finally rebooted and now all is well. I hate rebooting!

    I am inside my company firewall...large company with many wireless access points. In certain parts of the building this is very reproducible and in multiple areas, so I don't believe it is a faulty router. I have found a place that allows me to work without getting those messages for most of the day.

    I also get..

    Jun 23 15:39:11 Macintosh eapolclient[8651]: SecKeychainFindGenericPassword failed, -25300
    Jun 23 15:39:11 Macintosh eapolclient[8651]: en1: failed to retrieve password from keychain

    Why doesn't the system prompt me to type a password to whatever keychain it is not able to access?
  • 11. Re: frequent transitions for interface en1 - network traffic reduction meas
    Phil Ruff Level 1 Level 1 (5 points)
    I found this useful post regarding TKIP MIC...

    http://www.cwnp.com/phpBB2/viewtopic.php?p=13260

    Go to joswr1ght...he has a very detailed explanation of the TKIP MIC failures.

    His summary view is that the errors occur as a result of a malicious insider or broken driver(most likely). I agree with the driver theory and believe the issue is probably provoked by the subject of this post, the 'frequent transitions...' as reported by mDNSResponder(used by Bonjour).

    My next step is to try and disable bonjour via instructions from this post...

    http://tech.karbassi.com/2007/11/06/leopard-turn-off-bonjour-mdnsresponder/

    I'll let you know if it avoids the issue....
  • 12. Re: frequent transitions for interface en1 - network traffic reduction measures
    Roger Michaels Level 1 Level 1 (0 points)
    I'm having the same problem, but only with some wireless networks. Others work fine. It's very irritating, I hope a fix is released soon.

    Does Apple browse these threads? Please help us!
  • 13. Re: frequent transitions for interface en1 - network traffic reduction measures
    William Kucharski Level 6 Level 6 (14,695 points)
    Apple can only fix what's their fault, and at least the early posts to this thread reflected what look to be errors in router firmware.

    (Hint: If a Mac joining the network causes the router to crash, it's not a Mac OS X bug.)
  • 14. Re: frequent transitions for interface en1 - network traffic reduction measures
    jroe Level 1 Level 1 (0 points)
    I would say the opposite is true . . . if all computers are working fine and a mac joins the network and the router crashes the mac is doing something it shouldn't be . . . . especially when it's only leopard macs causing the issue . . .
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