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-rw-r--r--inet/netinet/in.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/inet/netinet/in.h b/inet/netinet/in.h
index ddc0975..418c6f9 100644
--- a/inet/netinet/in.h
+++ b/inet/netinet/in.h
@@ -118,7 +118,7 @@ struct in_addr
#define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
#define IN_CLASSB_MAX 65536
-#define IN_CLASSC(a) ((((uint32_t) (a)) & 0xc0000000) == 0xc0000000)
+#define IN_CLASSC(a) ((((uint32_t) (a)) & 0xe0000000) == 0xc0000000)
#define IN_CLASSC_NET 0xffffff00
#define IN_CLASSC_NSHIFT 8
#define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)