pppoe connects but i need to run 'ifconfig eth0 up' please help....

Hello All,
 I got sarge with a pppoe connection from dataone.i have configured
this connection,able to connect but as title shows,i need to run
'ifconfig eth0 up'.here is /etc/network/interfaces:

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# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
iface eth0 inet static
        address 192.168.1.2
        netmask 255.255.255.0
        network 192.168.1.0
        broadcast 192.168.1.255
        gateway 192.168.1.1
        name Ethernet LAN card
#auto eth0

iface dsl-provider inet static
provider dsl-provider

# added by pppoeconf

    pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf
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As you can see i commented out eth0 line as "#auto eth0" because i
believe the 'pre-up /sbin/ifconfig eth0 up' brings network up..but it
does not...and i need to run ifconfig eth0 up...

if i uncomment the 'auto eth0' line,i need to run another command to
connect like 'route add default ppp0'....
so my last state of pppoe connection looks like this:
Code:
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cosmic:~# ifconfig eth0 up
cosmic:~# pon dsl-provider
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help me please.....sorry for continous posts.... :)