"dhclient -v eth0" failed on ARM Versatile Express A9 ubuntu.

[Botao]

On ARM Versatile Express A9 board with Linux Linaro ubuntu image:

http://snapshots.linaro.org/ubuntu/pre-built/vexpress/626/vexpress-saucy_developer_20140410-626.img.gz

"dhclient -v eth0" test failed:

https://validation.linaro.org/dashboard/streams/private/team/linaro/pre-built-vexpress/bundles/fd3bcdd043da696bbab3acabf8e0b50e6db365d1/b393bea1-e787-4481-93ce-617a40956006/

<LAVA_SIGNAL_STARTTC linux-linaro-ubuntu-route-dhclient>
Internet Systems Consortium DHCP Client 4.2.4
Copyright 2004-2012 Internet Systems Consortium.
All rights reserved.
For info, please visit https://www.isc.org/software/dhcp/
RTNETLINK answers: Input/output error
Listening on LPF/eth0/00:02:f7:00:3c:c2
Sending on LPF/eth0/00:02:f7:00:3c:c2
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
receive_packet failed on eth0: Network is down
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 16 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 20 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 18 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 19 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 14 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 9 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 15 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 21 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 18 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 18 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 15 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 2 (xid=0x35c4e954)
send_packet: Network is down
dhclient.c:1996: Failed to send 300 byte long packet over eth0 interface.
No DHCPOFFERS received.

By comparison, it passed on build #618:
http://snapshots.linaro.org/ubuntu/pre-built/vexpress/618/vexpress-saucy_developer_20140325-618.img.gz

https://validation.linaro.org/dashboard/streams/private/team/linaro/pre-built-vexpress/bundles/cef87782fbc7a193a916a8605e4e56db6a5b01af/96923b9f-04d6-406f-a500-8b94e5075119/

Above behaviours have also been verified locally with the corresponding images, same output as LAVA ran.

P.S.: The command "ifconfig eth0 down" actually doesn't work, though the return value is 0. After run it, the IP address still associated with eth0.

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This issue is observed on following images:
http://snapshots.linaro.org/ubuntu/pre-built/vexpress/626/vexpress-saucy_developer_20140410-626.img.gz
http://snapshots.linaro.org/ubuntu/pre-built/vexpress/627/vexpress-saucy_developer_20140414-627.img.gz
http://snapshots.linaro.org/ubuntu/pre-built/vexpress/630/vexpress-saucy_developer_20140417-630.img.gz

[Botao (botao-sun)]

This issue has gone on build #639 with test happened on 9 May 2014:

https://validation.linaro.org/dashboard/streams/private/team/linaro/pre-built-vexpress/bundles/d2875e00e102d24a302dcd4e80d4320a8bece145/362629e5-2b39-4b9e-ae6e-3bc6dda3c4a0/result/8/