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-rw-r--r--resolv/gethnamaddr.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/resolv/gethnamaddr.c b/resolv/gethnamaddr.c
index f2def79e24..49aea2a719 100644
--- a/resolv/gethnamaddr.c
+++ b/resolv/gethnamaddr.c
@@ -123,6 +123,12 @@ static void addrsort __P((char **, int));
 #define	MAXPACKET	1024
 #endif
 
+/* As per RFC 1034 and 1035 a host name cannot exceed 255 octets in length.  */
+#ifdef MAXHOSTNAMELEN
+# undef MAXHOSTNAMELEN
+#endif
+#define MAXHOSTNAMELEN 256
+
 typedef union {
     HEADER hdr;
     u_char buf[MAXPACKET];