I'm running Ubuntu Jaunty 9.04 and I noticed a bug with it.
I setup my adsl connection with pppoeconf... in the pppoeconf wizard I specify to connect automatically on boot. This adds the following to my /etc/network/interfaces file:
iface dsl-provider inet ppp
# please do not modify the following line
pre-up /sbin/ifconfig eth0 up # line maintained by pppoeconf
This ususally automatically connects the adsl connection on boot however for some reason in jaunty it doesnt work. To get around this I just added it to the bottom of my rc.local file in /etc/init.d. I told it to sleep for 10 seconds before trying to connect:
If anyone knows the proper fix please let me know... this is just a handy work around.