"wireless carrier lost" -> complete network shutdown

[William Park]

Hi,

I have D-Link DIR-655 wireless router, though I think it's Linux issue.
I'm using kernel 3.5.1, but I had same problem with 3.2 and 3.4 as well.

Time to time, I get "carrier lost" message on "wlan0", and then "dhcpcd"
exits, followed by shutdown of all network connections, even statically
assigned wired "eth0" is down.

/var/log/debug:

    Aug 15 00:05:09 node1 kernel: [ 6089.507650] ieee80211 phy0: wlan0: No probe response from AP 00:18:e7:f6:6d:2e after 500ms, disconnecting.

/var/log/message:

    Aug 15 00:05:09 node1 dhcpcd[1896]: wlan0: carrier lost
    Aug 15 00:05:09 node1 kernel: [ 6089.567663] cfg80211: Calling CRDA to update world regulatory domain
    Aug 15 00:05:09 node1 kernel: [ 6089.981577] cfg80211: World regulatory domain updated:
    Aug 15 00:05:09 node1 kernel: [ 6089.981582] cfg80211:   (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
    Aug 15 00:05:09 node1 kernel: [ 6089.981585] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
    Aug 15 00:05:09 node1 kernel: [ 6089.981587] cfg80211:   (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
    Aug 15 00:05:09 node1 kernel: [ 6089.981589] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
    Aug 15 00:05:09 node1 kernel: [ 6089.981591] cfg80211:   (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
    Aug 15 00:05:09 node1 kernel: [ 6089.981592] cfg80211:   (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
    Aug 15 00:05:13 node1 dhcpcd[11808]: sending signal 1 to pid 1896
    Aug 15 00:05:13 node1 dhcpcd[1896]: received SIGHUP, releasing
    Aug 15 00:05:13 node1 dhcpcd[1896]: wlan0: removing interface
    Aug 15 00:05:13 node1 dhcpcd[11808]: waiting for pid 1896 to exit
    Aug 15 00:05:13 node1 kernel: [ 6093.291961] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
    Aug 15 00:05:13 node1 kernel: [ 6093.529575] r8169 0000:01:00.0: eth0: link down
    Aug 15 00:05:13 node1 kernel: [ 6093.530422] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
    Aug 15 00:05:18 node1 kernel: [ 6098.052918] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready

Has anyone encountered this kind of issue?
-- 
William
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