weird dhclient problem

[wolf python london <lyh19901223@gmail.com>]

Hey all,

    I recently upgrade my Wheezy and Sid box, and find a weird problem about
    dhclient(package:isc-dhcp-client ).

    My boxes are in an intranet (my campus),so I want to access the stuff
    in the intranet (ftp and http). The intranet has its own dhcp server,
    so we can get an ip and netmask by dhclient. In my squeeze box ,
    $dhclient eth0
    is fine , I can then acess the ftp and http servers in the intranet.
    But in my Wheezy and Sid boxes, it's sucks. Here is my
    /etc/network/interfaces:

    wolf@wheezy:~$ cat /etc/network/interfaces
    # 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
    allow-hotplug eth0
    #NetworkManager#iface eth0 inet dhcp

    iface dsl-provider inet ppp
    pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf
    provider dsl-provider
    iface eth0 inet dhcp

    As you can see, the last line "iface eth0 inet dhcp" means I can
    get an ip via ifupdown and still use the dhcp to configure eth0.
    #ifdown eth0;ifup eth0
    Ok, its fine,ping other hosts(for example 10.20.79.1) in the
intranet is ok .
    I paste the process here (http://pastie.org/2142558)
    I cannot figure it out why the dhclient command failed though it
    actually get and ip and netmask and the route are even the same, while
    ifupdown is ok  ?


    thanks all!


-- 
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Yes, I use Debian GNU/L
wolf python london(WPL)
Do as you soul should do !
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