CARP: Print the protocol name before any GET_()

This change will print the protocol name even if the first octet is
truncated.
Use nd_print_protocol_caps().

Author: fxlb

print-carp.c

@@ -52,13 +52,14 @@ carp_print(netdissect_options *ndo, const u_char *bp, u_int len, u_int ttl)
 	const char *type_s;
 
 	ndo->ndo_protocol = "carp";
+	nd_print_protocol_caps(ndo);
 	version = (GET_U_1(bp) & 0xf0) >> 4;
 	type = GET_U_1(bp) & 0x0f;
 	if (type == 1)
 		type_s = "advertise";
 	else
 		type_s = "unknown";
-	ND_PRINT("CARPv%u-%s %u: ", version, type_s, len);
+	ND_PRINT("v%u-%s %u: ", version, type_s, len);
 	if (ttl != 255)
 		ND_PRINT("[ttl=%u!] ", ttl);
 	if (version != 2 || type != 1)