Fix build without IPv6

diff --git a/platform.h b/platform.h
index 36086b5488600b8efe8de65395f4d6924c72df7c..46797c16f09a1eef3d6b0a77ef32b3744983bae9 100644 (file)
--- a/platform.h
+++ b/platform.h
@@ -33,7 +33,7 @@ char *hardware_platform(void);
 int check_ipv6(const char *, int);
 int ipv6_dadtransmits(const char *);
 #else
-#define check_ipv6(a) 0
+#define check_ipv6(a, b) -1
 #endif
 
 #endif