Fix test_bgp_route_exchange: use proper byte order and uasync timers

- Replace artificial timing loop with uasync_poll(ua, -1) for proper timeout handling
- Fix endianness bug: use htonl() for IP address comparison in check_learned_route()
- Remove duplicate init_connections() calls

Test now passes successfully - BGP route exchange working correctly

tests/test_bgp_route_exchange.c

@@ -175,7 +175,10 @@ static void print_routing_table(struct UTUN_INSTANCE* inst, const char* name) {
 // Check if specific learned route exists
 static int check_learned_route(struct UTUN_INSTANCE* inst, uint32_t network, 
                                 uint8_t prefix_len, uint64_t expected_node_id) {
-    if (!inst || !inst->rt) return 0;
+    if (!inst || !inst->rt) {
+        DEBUG_ERROR(DEBUG_CATEGORY_ROUTING, "check_learned_route: no instance or rt");
+        return 0;
+    }
     
     for (size_t i = 0; i < inst->rt->count; i++) {
         struct ROUTE_ENTRY* entry = &inst->rt->entries[i];
@@ -202,14 +205,14 @@ static int verify_bgp_exchange(void) {
     // Check server learned client's routes (192.168.20.0/24, 192.168.21.0/24)
     DEBUG_INFO(DEBUG_CATEGORY_ROUTING, "Checking server learned client's routes...");
 
-    if (!check_learned_route(server_instance, 0xC0A81400, 24, 0x2222222222222222ULL)) {
+    if (!check_learned_route(server_instance, htonl(0xC0A81400), 24, 0x2222222222222222ULL)) {
         DEBUG_ERROR(DEBUG_CATEGORY_ROUTING, "FAIL: Server missing learned route 192.168.20.0/24");
         success = 0;
     } else {
         DEBUG_INFO(DEBUG_CATEGORY_ROUTING, "PASS: Server has learned route 192.168.20.0/24");
     }
 
-    if (!check_learned_route(server_instance, 0xC0A81500, 24, 0x2222222222222222ULL)) {
+    if (!check_learned_route(server_instance, htonl(0xC0A81500), 24, 0x2222222222222222ULL)) {
         DEBUG_ERROR(DEBUG_CATEGORY_ROUTING, "FAIL: Server missing learned route 192.168.21.0/24");
         success = 0;
     } else {
@@ -361,14 +364,11 @@ int main() {
     monitor_timeout_id = uasync_set_timeout(ua, 100, NULL, monitor_connections);
     test_timeout_id = uasync_set_timeout(ua, TEST_TIMEOUT_MS, NULL, test_timeout);
     
-    // Main event loop
+    // Main event loop - use uasync timers only, no artificial timing
     DEBUG_INFO(DEBUG_CATEGORY_ETCP, "Running event loop...");
     
-    int elapsed = 0;
-    int poll_interval = 5;
-    while (test_phase < 3 && elapsed < TEST_TIMEOUT_MS) {
-        uasync_poll(ua, poll_interval);
-        elapsed += poll_interval;
+    while (test_phase < 3) {
+        uasync_poll(ua, -1);  // Wait indefinitely for events/timeouts
     }
     
     // Cleanup