From: Wong Fei Young <wongbali@xxxxxxxxxx> > I got error to configure Squid (either 3.1.1 or 3.1.3) below. > I used the old (OpenSuSE stock) linux-kernel-headers RPM 2.6.31. Please advise me what I > should do to enable Intercepting Proxy. Personaly, I have 2 different netfilter.h on my CentOS... # ll /usr/include/linux/netfilter.h /usr/src/kernels/2.6.18-164.15.1.el5-i686/include/linux/netfilter.h -rw-r--r-- 1 root root 817 Mar 17 16:24 /usr/include/linux/netfilter.h -rw-r--r-- 1 root root 10871 Mar 17 16:28 /usr/src/kernels/2.6.18-164.15.1.el5-i686/include/linux/netfilter.h # rpm -qf /usr/include/linux/netfilter.h kernel-headers-2.6.18-164.15.1.el5 # rpm -qf /usr/src/kernels/2.6.18-164.15.1.el5-i686/include/linux/netfilter.h kernel-devel-2.6.18-164.15.1.el5 JD