I am only successfully to compile by remove all lines following: #ifdef __linux__ /* for IPV6_PATHMTU */ # include <linux/in6.h> #endif failed compilation even modified to #if (defined(__linux__) && !defined(IPV6_PATHMTU)) /* for IPV6_PATHMTU */ # include <linux/in6.h> #endif 2015-07-08 17:01 GMT+08:00 Nikos Mavrogiannopoulos <n.mavrogiannopoulos at gmail.com>: > 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?