Using Redhat 6.2 with initscripts 5.00-1 I have found that ifup fails to
return the command prompt after executing. I run /sbin/ifup ppp0 and it
dails into my ISP, logins in but I need to go to another virtual terminal
to start my masquerading scripts. The system initially had 6.0 and then was
upgraded to 6.2. The system was dialing into the ISP fine and starting up
the firewall scripts from within /etc/ppp/ifup-ppp0. Now it does not do
The bug is very repeatable. I can run whatever tests you feel it is
necessary to either determine this is a bug or not.
This is actually by design; it will exit when the ppp connection exits.
RH 6.2 `ifup ppp0' returns after the connection is up and able to pass traffic
(at least in my installation with initscripts-5.00-1).
I am able to add a masquerading rule once at boot time and have it work for all
subsequent PPP connections; could this work for you?