diff --git a/tun_rules.go b/tun_rules.go
index ed58053..37dcd98 100644
--- a/tun_rules.go
+++ b/tun_rules.go
@@ -111,14 +111,14 @@ func (o *Options) BuildAutoRouteRanges(underNetworkExtension bool) ([]netip.Pref
 			inet4Ranges = o.Inet4RouteAddress
 		} else if autoRouteUseSubRanges && !underNetworkExtension {
 			inet4Ranges = []netip.Prefix{
-				netip.PrefixFrom(netip.AddrFrom4([4]byte{1, 0, 0, 0}), 8),
-				netip.PrefixFrom(netip.AddrFrom4([4]byte{2, 0, 0, 0}), 7),
-				netip.PrefixFrom(netip.AddrFrom4([4]byte{4, 0, 0, 0}), 6),
-				netip.PrefixFrom(netip.AddrFrom4([4]byte{8, 0, 0, 0}), 5),
-				netip.PrefixFrom(netip.AddrFrom4([4]byte{16, 0, 0, 0}), 4),
-				netip.PrefixFrom(netip.AddrFrom4([4]byte{32, 0, 0, 0}), 3),
-				netip.PrefixFrom(netip.AddrFrom4([4]byte{64, 0, 0, 0}), 2),
-				netip.PrefixFrom(netip.AddrFrom4([4]byte{128, 0, 0, 0}), 1),
+				netip.PrefixFrom(netip.AddrFrom4([4]byte{0: 1}), 8),
+				netip.PrefixFrom(netip.AddrFrom4([4]byte{0: 2}), 7),
+				netip.PrefixFrom(netip.AddrFrom4([4]byte{0: 4}), 6),
+				netip.PrefixFrom(netip.AddrFrom4([4]byte{0: 8}), 5),
+				netip.PrefixFrom(netip.AddrFrom4([4]byte{0: 16}), 4),
+				netip.PrefixFrom(netip.AddrFrom4([4]byte{0: 32}), 3),
+				netip.PrefixFrom(netip.AddrFrom4([4]byte{0: 64}), 2),
+				netip.PrefixFrom(netip.AddrFrom4([4]byte{0: 128}), 1),
 			}
 		} else {
 			inet4Ranges = []netip.Prefix{netip.PrefixFrom(netip.IPv4Unspecified(), 0)}
@@ -146,7 +146,13 @@ func (o *Options) BuildAutoRouteRanges(underNetworkExtension bool) ([]netip.Pref
 			inet6Ranges = o.Inet6RouteAddress
 		} else if autoRouteUseSubRanges && !underNetworkExtension {
 			inet6Ranges = []netip.Prefix{
-				netip.PrefixFrom(netip.IPv6Unspecified(), 1),
+				netip.PrefixFrom(netip.AddrFrom16([16]byte{0: 1}), 8),
+				netip.PrefixFrom(netip.AddrFrom16([16]byte{0: 2}), 7),
+				netip.PrefixFrom(netip.AddrFrom16([16]byte{0: 4}), 6),
+				netip.PrefixFrom(netip.AddrFrom16([16]byte{0: 8}), 5),
+				netip.PrefixFrom(netip.AddrFrom16([16]byte{0: 16}), 4),
+				netip.PrefixFrom(netip.AddrFrom16([16]byte{0: 32}), 3),
+				netip.PrefixFrom(netip.AddrFrom16([16]byte{0: 64}), 2),
 				netip.PrefixFrom(netip.AddrFrom16([16]byte{0: 128}), 1),
 			}
 		} else {