GRE: Put the flags bitmap right.

Recursion Control is a 3-bit unsigned integer, not a flag.

Author: infrastation

print-gre.c

@@ -52,7 +52,6 @@
 #define	GRE_KP		0x2000		/* key present */
 #define	GRE_SP		0x1000		/* sequence# present */
 #define	GRE_sP		0x0800		/* source routing */
-#define	GRE_RECRS	0x0700		/* recursion count */
 #define	GRE_AP		0x0080		/* acknowledgment# present */
 
 static const struct tok gre_flag_values[] = {
@@ -61,11 +60,11 @@ static const struct tok gre_flag_values[] = {
     { GRE_KP, "key present"},
     { GRE_SP, "sequence# present"},
     { GRE_sP, "source routing present"},
-    { GRE_RECRS, "recursion count"},
     { GRE_AP, "ack present"},
     { 0, NULL }
 };
 
+#define	GRE_RECRS_MASK	0x0700		/* recursion count */
 #define	GRE_VERS_MASK	0x0007		/* protocol version */
 
 /* source route entry types */