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-rw-r--r--include/netinet/in.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/netinet/in.h b/include/netinet/in.h
index 02a77ca5..0336b104 100644
--- a/include/netinet/in.h
+++ b/include/netinet/in.h
@@ -153,4 +153,6 @@ uint16_t ntohs(uint16_t);
 #define	IN_EXPERIMENTAL(a)	((((in_addr_t)(a)) & 0xe0000000) == 0xe0000000)
 #define	IN_BADCLASS(a)		((((in_addr_t)(a)) & 0xf0000000) == 0xf0000000)
 
+#define IN_LOOPBACKNET 127
+
 #endif