On Wed, Jul 8, 2015 at 3:58 AM, Edmond Chu <edmond25 at gmail.com> wrote: > Hi, > When I try to update OCSERV to lastest version 0.10.6 from 0.10.1, it > prompts error as following: I realized the is a conflict in some versions of glibc. If you change in worker-vpn.c the following #ifdef __linux__ /* for IPV6_PATHMTU */ # include <linux/in6.h> #endif with #if defined(__linux__) && !defined(IPV6_PATHMTU) /* for IPV6_PATHMTU */ # include <linux/in6.h> #endif does it avoid the compilation error?