Error to restart network service in openstack

jiten jha jitenjha11 at
Wed Apr 10 18:29:16 UTC 2013

Dear Friends,

I have configured openstack cloud on 12.04 when I am restarting network
service than It is giving me error.

RTNETLINK answers: File exists
Fail to bring up eth1 .

vim /etc/network/interfaces

#The loopback network interface
auto lo
iface lo inet loopface

#The primary network interface
auto eth0
iface eth0 inet shcp

#Public interface
auto eth1
iface eth1 inet static
#private interface
 auto eth2
iface eth2 inet manual
up ifconfig eth2 up

I have search on google but not getting any ans to solve that problem .
even i have install new os .

I am follow "openstack cloud computing cookbook".

Please help me to solve this problem.

Thanks & Regards
Jitendra Jha
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