From 3a9a8d4abf440eab3465b18ed65a1bade78666d5 Mon Sep 17 00:00:00 2001
From: ltdk <usr@ltdk.xyz>
Date: Tue, 13 Jun 2023 22:30:38 -0400
Subject: [PATCH] Alter `Display` for `Ipv6Addr` for IPv4-compatible addresses

---
 library/core/src/net/ip_addr.rs | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/library/core/src/net/ip_addr.rs b/library/core/src/net/ip_addr.rs
index 954d88d548e..c51913fa8ab 100644
--- a/library/core/src/net/ip_addr.rs
+++ b/library/core/src/net/ip_addr.rs
@@ -1770,14 +1770,8 @@ impl fmt::Display for Ipv6Addr {
                 f.write_str("::")
             } else if self.is_loopback() {
                 f.write_str("::1")
-            } else if let Some(ipv4) = self.to_ipv4() {
-                match segments[5] {
-                    // IPv4 Compatible address
-                    0 => write!(f, "::{}", ipv4),
-                    // IPv4 Mapped address
-                    0xffff => write!(f, "::ffff:{}", ipv4),
-                    _ => unreachable!(),
-                }
+            } else if let Some(ipv4) = self.to_ipv4_mapped() {
+                write!(f, "::ffff:{}", ipv4)
             } else {
                 #[derive(Copy, Clone, Default)]
                 struct Span {