How to enable debug logging for GRE?

Question

How to enable debug logging for module ip_gre on linux 2.6?

score 1 · Answer 1 · answered Sep 15 '10 at 06:30

1

It looks like there is no output generated in ip_gre.c, except for

printk(KERN_INFO "GRE over IPv4 tunneling driver\n");
printk(KERN_INFO "ipgre init: can't add protocol\n");

and

printk(KERN_INFO "ipgre close: can't remove protocol\n");

So I'm afraid you're out of luck..

answered Sep 15 '10 at 06:30

Wouter de Bie

I've looked a source code, there are no print at all. So, my question was a stupid, sorry. – Sep 15 '10 at 11:41

1 Answers1