device state change: ip-config -> failed (reason 'ip-config-unavailable')

[Robert P. J. Day]

  after the wired network connection in my hotel room had *seemed* to
be working for a short while, now i'm getting nothing, and all DHCP
client attempts to connect generate this in /var/log/syslog:

... snip ...
Dec 14 18:52:19 oneiric kernel: [ 2497.892781] eth0: no IPv6 routers present
Dec 14 18:52:28 oneiric NetworkManager[1067]: <info> (eth0): IP6 addrconf timed out or failed.
Dec 14 18:52:28 oneiric NetworkManager[1067]: <info> Activation (eth0) Stage 4 of 5 (IP6 Configure Timeout) scheduled...
Dec 14 18:52:28 oneiric NetworkManager[1067]: <info> Activation (eth0) Stage 4 of 5 (IP6 Configure Timeout) started...
Dec 14 18:52:28 oneiric NetworkManager[1067]: <info> Activation (eth0) Stage 5 of 5 (IP Configure Commit) started...
Dec 14 18:52:28 oneiric NetworkManager[1067]: <info> Activation (eth0) Stage 5 of 5 (IP Configure Commit) failed (no IP configuration found)
Dec 14 18:52:28 oneiric NetworkManager[1067]: <info> (eth0): device state change: ip-config -> failed (reason 'ip-config-unavailable') [70 120 5]
Dec 14 18:52:28 oneiric NetworkManager[1067]: <info> Marking connection 'Wired connection 1' invalid.
Dec 14 18:52:28 oneiric NetworkManager[1067]: <warn> Activation (eth0) failed.
Dec 14 18:52:28 oneiric NetworkManager[1067]: <info> Activation (eth0) Stage 5 of 5 (IP Configure Commit) complete.
Dec 14 18:52:28 oneiric NetworkManager[1067]: <info> Activation (eth0) Stage 4 of 5 (IP6 Configure Timeout) complete.
Dec 14 18:52:28 oneiric NetworkManager[1067]: <info> (eth0): device state change: failed -> disconnected (reason 'none') [120 30 0]
Dec 14 18:52:28 oneiric NetworkManager[1067]: <info> (eth0): deactivating device (reason 'none') [0]
Dec 14 18:52:28 oneiric NetworkManager[1067]: <info> (eth0): canceled DHCP transaction, DHCP client pid 3718

  very much like this report involving wlan0:

http://ubuntuforums.org/archive/index.php/t-1863011.html

the tech support guy for the hotel network was amazingly versed in
ubuntu, and first asked me to try mii-tool, followed by ethtool, but
no luck.  so i'm open to suggestions.

  wireless is available but slow as heck, so i'd really like to figure
out what the deal is with eth0.

  ubuntu 11.10, with the latest upgrades.

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
LinkedIn:                               http://ca.linkedin.com/in/rpjday
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