更新了缓冲区设置选项，并修复了部分错误

bird/bird.conf

@@ -2,12 +2,16 @@ include "/etc/bird/vars.conf";
 include "/etc/bird/function/*.conf";
 include "/etc/bird/conf/*.conf";
 
+log "/var/log/bird.log" {info, warning, error};
+
 protocol device {
     scan time 10;
-}
+};
 
 protocol kernel {
     scan time 20;
+    merge paths yes limit 4;
+    netlink rx buffer 8388608;
     ipv6 {
         import none;
         export filter {
@@ -23,11 +27,12 @@ protocol kernel {
 
 protocol kernel {
     scan time 20;
+    merge paths yes limit 4;
     ipv4 {
         import none;
         export filter {
             if source = RTS_STATIC then reject;
-            if unet_is_valid_network_v4() then {   # 检查UNET自有网段
+            if unet_is_valid_network_v4() then {
                 krt_prefsrc = UNET_V4_kernel;
                 accept;
             }