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-rw-r--r--src/api/sockets.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/api/sockets.c b/src/api/sockets.c
index a0c24829..a6d682cb 100644
--- a/src/api/sockets.c
+++ b/src/api/sockets.c
@@ -38,7 +38,8 @@
*/
#include "lwip/opt.h"
-#include "ZeroTierConstants.h"
+
+extern int zts_errno;
#if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */