Include ctype.h for isxdigit()

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/tun.c b/tun.c
index 01566ca..1ff4b24 100644 (file)
--- a/tun.c
+++ b/tun.c
@@ -37,6 +37,7 @@
 #include <net/if.h>
 #include <arpa/inet.h>
 #include <errno.h>
+#include <ctype.h>
 #if defined(__sun__)
 #include <stropts.h>
 #include <sys/sockio.h>