BSNL dataone with manual ip!! .. something is weird in Ubuntu 9.04 networking..

Donno if ubuntu went crazy..
BSNL dataone connection goes on perfect with Windows Vista... but when i installed ubuntu, i think, networkin in ubuntu went crazy..

Wot happened is as follows..

BSNL Dataone broadband uses dhcp.. So, using a username and password, u need to login.. As usual, the broadband modem is 192.168.1.1 ..

Now, wen i used fedora before, i was easily able to do 'ping 192.168.1.1' without any need for configuring the device..

Wen i booted from the jaunty live cd, its network icon showed the network connectivity to the broadband router and i was able to connect to the internet easily..
After installation, i was able to use net properly for 2-3 sessions..

Now, all of a sudden, wen i booted ubuntu the next time, the network manager is showing NO CONNECTION..

i used the 'nm-connection-editor' applet and found that it also had no WIRED CONNECTION.. then i edited it to create a new dhcp connection.. i disabled network and enabled it again and even then, the nm-icon showed NO VALID CONNECTION..
this continued for many system restarts while Vista worked fine with net..

wen i booted the next time, i did ' cat /etc/network/interfaces ' and the output was

auto lo
iface lo inet loopback


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

auto eth0
iface eth0 inet manual


i should be getting ' iface eth0 inet dhcp' .. so, i edited that line to make it dhcp.. and again restarted.. once again it was not working..

Now i tried another thing.. i took the nm-connection-manager applet and edited the wired connection and checked the box " available to all users " .. when i saved and closed the connection, the connection simply disappeared from the list of wired connection!!!!!!!!!!!... some kind of bug?????????

i tried the ubuntuforums.org and its of no use till now..

now i did something different..

I edited the 'Auto-eth0' connection which i created in 'nm-connection-manager' and i changed dhcp to manual.. i changed ma ip to 192.168.1.4.. netmast.. 255.255.255.0, gateway.. 192.168.1.1.. and alas.. i was able to ping 192.168.1.1 ..!!!!!!!!!!.

I was then able to use ' sudo pon dsl-provider ' to get the net connection and i am typing from that manually configured BSNL dataone connection.. :D ..

earlier i edited ma /etc/resolv.conf to be 192.168.1.1
but now after doing 'pon dsl-provider' , it is

nameserver 218.248.255.139
nameserver 218.248.255.146

Wot is happening???

and even though internet is connected, the network manager icon shows NO VALID ACTIVE CONNECTION..!! .. :D..

any idea??????????????????????