diff --git a/src/net/netip/netip.go b/src/net/netip/netip.go
index 156f01e11e..e566a4861f 100644
--- a/src/net/netip/netip.go
+++ b/src/net/netip/netip.go
@@ -949,14 +949,15 @@ func (ip Addr) MarshalText() ([]byte, error) {
 		b := make([]byte, 0, max)
 		return ip.appendTo4(b), nil
 	default:
-		max := len("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff%enp5s0")
-		b := make([]byte, 0, max)
 		if ip.Is4In6() {
+			max := len("::ffff:255.255.255.255%enp5s0")
+			b := make([]byte, 0, max)
 			return ip.appendTo4In6(b), nil
 		}
+		max := len("ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff%enp5s0")
+		b := make([]byte, 0, max)
 		return ip.appendTo6(b), nil
 	}
-
 }
 
 // UnmarshalText implements the encoding.TextUnmarshaler interface.
diff --git a/src/net/netip/netip_test.go b/src/net/netip/netip_test.go
index a748ac34f1..d80582139e 100644
--- a/src/net/netip/netip_test.go
+++ b/src/net/netip/netip_test.go
@@ -1715,11 +1715,15 @@ func BenchmarkIPStringExpanded(b *testing.B) {
 	}
 }
 
-func BenchmarkIPMarshalText(b *testing.B) {
-	b.ReportAllocs()
-	ip := MustParseAddr("66.55.44.33")
-	for i := 0; i < b.N; i++ {
-		sinkBytes, _ = ip.MarshalText()
+func BenchmarkAddrMarshalText(b *testing.B) {
+	for _, test := range parseBenchInputs {
+		ip := MustParseAddr(test.ip)
+		b.Run(test.name, func(b *testing.B) {
+			b.ReportAllocs()
+			for i := 0; i < b.N; i++ {
+				sinkBytes, _ = ip.MarshalText()
+			}
+		})
 	}
 }