According to Documentation/networking/ip-sysctl.txt: conf/all/* is special and changes the settings for all interfaces. However, I did this: mercury:~# echo 1 >/proc/sys/net/ipv4/conf/all/log_martians mercury:~# cat /proc/sys/net/ipv4/conf/all/log_martians 1 mercury:~# cat /proc/sys/net/ipv4/conf/lo/log_martians 0 mercury:~# cat /proc/sys/net/ipv4/conf/eth0/log_martians 0 So it looks like the changes are not reflected in the individual interfaces. What's going on? Also, can anyone tell me how to test whether these options are working? (For instance, how can I send myself a martian packet, to see if it is logged?) I considered the possibility that the option really is on, and sysctl just doesn't report it, but I didn't know how to find out. This is kernel 2.4.2-ac7. -- Nate Eldredge [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/