Help me: Kernel level debugging for PPPd not working using kdebug 7 option

rakesh_krishnan · 03-04-2015, 07:49 PM

Hello

I am trying to log the Kernel level PPPd raw PPP messages (version 2.4.2) using Linux kernel 2.6.x to the /etc/syslog or /var/log/messages but the logging is not enabled for some reason.

I pass the kdebug 7 or kdebug 31 to the PPPd using /etc/ppp/options but the Kernel level debug logs are not shown in /proc/kmsg or using klogd or syslogd.

Can anyone please help me to fix this. What might be the problem?

Please reply..

Thanks,
Rakesh

veerain · 03-05-2015, 10:57 PM

Setting kdebug to 1 shows pppd kernel driver log messages in klogd. Setting it to 2 causes content of received packets to be logged and for 4 transmitted packets get logged.

Are you sure that your pppd script is using /etc/ppp/options file for reading options?

cyent · 07-06-2015, 08:26 PM

Can't get anything sane from it either...

From this...
http://permalink.gmane.org/gmane.linux.ppp/680

I conclude the facility has been removed from the kernel itself.