From d2ae94f20b70a23f82fc74d529bbe4ef3fd43e1d Mon Sep 17 00:00:00 2001
From: wwqgtxx <wwqgtxx@gmail.com>
Date: Sun, 24 Mar 2024 21:24:50 +0800
Subject: [PATCH] fix: iface panic
 https://github.com/MetaCubeX/mihomo/issues/1130

---
 component/iface/iface.go | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

diff --git a/component/iface/iface.go b/component/iface/iface.go
index dd932b46..2fd36861 100644
--- a/component/iface/iface.go
+++ b/component/iface/iface.go
@@ -40,16 +40,25 @@ func ResolveInterface(name string) (*Interface, error) {
 
 			ipNets := make([]netip.Prefix, 0, len(addrs))
 			for _, addr := range addrs {
-				ipNet := addr.(*net.IPNet)
-				ip, _ := netip.AddrFromSlice(ipNet.IP)
-
-				ones, bits := ipNet.Mask.Size()
-				if bits == 32 {
+				var pf netip.Prefix
+				switch addr.(type) {
+				case *net.IPNet:
+					ipNet := addr.(*net.IPNet)
+					ip, _ := netip.AddrFromSlice(ipNet.IP)
+					ones, bits := ipNet.Mask.Size()
+					if bits == 32 {
+						ip = ip.Unmap()
+					}
+					pf = netip.PrefixFrom(ip, ones)
+				case *net.IPAddr:
+					ipNet := addr.(*net.IPAddr)
+					ip, _ := netip.AddrFromSlice(ipNet.IP)
 					ip = ip.Unmap()
+					pf = netip.PrefixFrom(ip, ip.BitLen())
+				}
+				if pf.IsValid() {
+					ipNets = append(ipNets, pf)
 				}
-
-				pf := netip.PrefixFrom(ip, ones)
-				ipNets = append(ipNets, pf)
 			}
 
 			r[iface.Name] = &Interface{