Report if IPv6 support is enabled with the -v flag

The IPv6 support is stored in the config.h header file, instead of being
passed with the -D flag, so it is easier to read from version.cc.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/dns.c b/src/dns.c
index 188ee691..c9bc76dd 100644
--- a/src/dns.c
+++ b/src/dns.c
@@ -13,6 +13,7 @@
  * Non blocking pthread-handled Dns scheme
  */
 
+#include "config.h"
 
 /*
  * Uncomment the following line for debugging or gprof profiling.