Description of Problem:
If you configure a ppp interface to auto dial mode(for demand dial), and set 
it to start automatically on bootup, it will hang on starting ppp0 until 
network activity trigger the dial for the first time. This unfortunately will 
not happen in the bootup scripts since they wait for ppp0 to come up before 
proceeding to anything else.

How Reproducible:
Very Repeatable

Steps to Reproduce:
1. Create a dialup connection with auto dialing(instead of manual), and setup 
to start on bootup. Leave rest of options default
2. reboot(or run /etc/init.d/network start). It will sit on starting ppp0 
until network activity triggers the first dial
3. 

Actual Results:
Hangs on starting ppp0

Expected Results:
For a demand dial configuration, it should continue past the ppp0 w/out 
waiting for the modem to dial

Additional Information:
We solved this temporarily by changing the ONBOOT='yes' to no, and putting 
an "ifup ppp0 &" in the rc.local.

I remember seeing a setting to avoid this, but I cannot find this anymore.