1) script "/etc/sysconfig/network-scripts/ifup-ppp" cleans
out the file "var/run/ppp-$DEVICE.dev" and then runs pppd,
supposing that it will write something to that file. And the
script "/etc/sysconfig/network-scripts/ifdown-ppp" on the
line "file=/var/run/`cat /var/run/ppp-$DEVICE.dev`.pid"
supposes that there is the device name (e.g. "ppp0"). The
problem is that pppd (version 2.3.3 and 2.3.5) doesn't write
there anything, so ifdown can't find the PID and kill pppd.
2) when shutting down a ppp device by ifdown (no matter it
doesn't work), ifdown executes ifdown-ppp and then
ifdown-post. But ifdown-post is execute by ifdown-ppp and
even by /etc/ppp/ip-down when pppd is killed. I think it
should only be executed by ifdown.
Oops! I just downloaded the official package and found out that the
package I used before was a bit modified (the file "/etc/ppp/ip-up"
was missing). So the first bug is fixed in the current release of me
But the second one still seems to be there - the if*-post scripts are
still called several times (from /etc/ppp/ip-*,
/etc/sysconfig/network-scripts/if[up|down] and ifdown-ppp.
Unable to replicate this problem with the latest initscripst for 5.2.