babel: fix incorrect check in known_ae()

The known_ae() function accepts AE values up to 4, but the RFC only defines AE values 0-3.

Signed-off-by: zmw12306 <zmw12306@gmail.com>

diff --git a/babeld/message.c b/babeld/message.c
index 5a33d5c288ac6d6885143720f338ca99ba2f3e71..3d1dabce3513587f5f68768fee514cd24ca6a8f7 100644 (file)
--- a/babeld/message.c
+++ b/babeld/message.c
@@ -52,7 +52,7 @@ static const unsigned char tlv_min_length[MESSAGE_MAX + 1] =
 static bool
 known_ae(int ae)
 {
-    return ae <= 4;
+    return ae <= 3;
 }
 
 /* Parse a network prefix, encoded in the somewhat baroque compressed