Hi all, Symptom of my problem was: System can not ping to 127.0.0.1 I try to add an basic iptables rules iptables -I OUTPUT -j ACCEPT and command returned with an error including a long number.(like the error message when you want to add DNAT to an unsupoorted chain) In the dmesg log: allocation failed: out of vmalloc space - use vmalloc=<size> to increase size. printk: 2 messages suppressed. # cat /proc/meminfo VmallocTotal: 118776 kB VmallocUsed: 34948 kB VmallocChunk: 57472 kB Kernel Centos 5 kernel : 2.6.18-164 iptables-1.3.5 According to some notes from Internet and according to the dmesg log it is about vmalloc. However, meminfo shows only 34948 of 118776 vmallco is being used at that moment. 1- How can I see the real vmalloc sizes, and what the left vmalloc is used for? 2- Is the problem about vmalloc? 3- Is the solution is vmalloc=... kernel param? Best Regards, Oguz Yilmaz -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html