3G drops WiFi connection every 20 seconds

Hi,
I'm debugging why a particular application I wrote myself won't work. The application basically creates a CFNetwork-based connection to the Mac over WiFi, and this used to work. I've recently updated to Mac 10.6.1 and iPhoneOS 3.0.1, and it no longer works. I see the following in my console log on the iPhone (which breaks the connection):
Sat Oct 10 13:03:58 unknown configd[22] <Notice>: network configuration changed.
Sat Oct 10 13:04:01 unknown mDNSResponder[17] <Error>: Note: Frequent transitions for interface en0 (169.254.7.182); network traffic reduction measures in effect
Sat Oct 10 13:04:39 unknown kernel[0] <Debug>: AppleMRVL868x::setDISASSOCIATE() [configd]:
Sat Oct 10 13:04:39 unknown kernel[0] <Debug>: AppleMRVL868x Stopped iBSS: @ 0xc27cb800, BSSID = [omitted], rssi = -45, rate = 48 ( 88%), channel = 11, encryption = 0x2, ap = 0, hidden = 0, directed = 0, failures = 0, age = 61, ssid[ 6] = "Ronald"
Sat Oct 10 13:04:39 unknown kernel[0] <Debug>: AirPort: Link Down on en0
Sat Oct 10 13:04:40 unknown configd[22] <Notice>: network configuration changed.
Sat Oct 10 13:04:40 unknown kernel[0] <Debug>: AppleMRVL868x::setASSOCIATE() [configd]: lowerAuth = AUTHTYPE_SHARED, upperAuth = AUTHTYPE_NONE, key = CIPHERWEP40, flags = 0x2
Sat Oct 10 13:04:40 unknown kernel[0] <Debug>: AppleMRVL868x::setCIPHER_KEY() [configd]: type = CIPHERWEP40, index = 0, flags = 0xF
Sat Oct 10 13:04:41 unknown kernel[0] <Debug>: AppleMRVL868x Joined iBSS: @ 0xc27cb800, BSSID = [omitted], rssi = -44, rate = 48 ( 88%), channel = 11, encryption = 0x2, ap = 0, hidden = 0, directed = 0, failures = 0, age = 1, ssid[ 6] = "Ronald"
Sat Oct 10 13:04:41 unknown kernel[0] <Debug>: AirPort: Link Up on en0
Sat Oct 10 13:04:41 unknown SpringBoard[25] <Warning>: WiFi: Joined network Ronald. WiFi bars visible: 0
Sat Oct 10 13:04:42 unknown mDNSResponder[17] <Error>: setsockopt - IPMULTICASTIF error 169.254.7.182 -1 errno 49 (Can't assign requested address)
Sat Oct 10 13:04:44 unknown mDNSResponder[17] <Error>: Note: Frequent transitions for interface en0 (169.254.7.182); network traffic reduction measures in effect
At that point, I get a "connection reset by peer" on my network connection, presumably becuse the en0 interface went down/up in this cycle. This happens every 20 seconds or so. What is going on here and how do I prevent my WiFi link from going down+up every 20 seconds?

I tried with another phone and that works fine - is my network card dead? Can I get that services?

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If you want to say thanks for a helpful answer,please click on the Ratings star on the left-hand side If the reply answers your question then please mark as ’Mark as Accepted Solution’

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3G drops WiFi connection every 20 seconds

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