From 3f128a4a6aa8dd43dad617d0e0c1ac80d981743e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=96=E7=95=8C?= <i@sekai.icu>
Date: Fri, 10 May 2024 17:50:37 +0800
Subject: [PATCH] Fix `Remove bad suppress_prefixlength iproute2 rule`

---
 tun_linux.go | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/tun_linux.go b/tun_linux.go
index c9693f8..2eccfc0 100644
--- a/tun_linux.go
+++ b/tun_linux.go
@@ -599,6 +599,26 @@ func (t *NativeTun) rules() []*netlink.Rule {
 			rules = append(rules, it)
 			priority6++
 		}
+		if p4 && !t.options.StrictRoute {
+			it = netlink.NewRule()
+			it.Priority = priority
+			it.Invert = true
+			it.Dport = netlink.NewRulePortRange(53, 53)
+			it.Table = unix.RT_TABLE_MAIN
+			it.SuppressPrefixlen = 0
+			it.Family = unix.AF_INET
+			rules = append(rules, it)
+		}
+		if p6 && !t.options.StrictRoute {
+			it = netlink.NewRule()
+			it.Priority = priority6
+			it.Invert = true
+			it.Dport = netlink.NewRulePortRange(53, 53)
+			it.Table = unix.RT_TABLE_MAIN
+			it.SuppressPrefixlen = 0
+			it.Family = unix.AF_INET6
+			rules = append(rules, it)
+		}
 	}
 
 	if p4 {