reject invalid routes

src/main.c

@@ -64,6 +64,13 @@ int main(void) {
         Log_Err("Failed to get next hop for destination %s", destStr);
     }
 
+    // Attempt to add class E route (should be rejected)
+    if (RouteTable_AddRoute_v4(0xF0000001, 0xF0000000, 0xC0A80101) < 0) {
+        Log_Info("Correctly rejected invalid class E route");
+    } else {
+        Log_Err("Incorrectly accepted invalid class E route");
+    }
+
     // Some IPv6 routes
     __uint128_t dest6 = (((__uint128_t)0x20010DB8 << 96) | ((__uint128_t)0x00000000 << 64) | ((__uint128_t)0x00000000 << 32) | (__uint128_t)0x00000001); // 2001:0db8::1
     __uint128_t mask6 = IPUtils_CIDRToMaskv6(64);