From 00ce9b4b703afd1d718acc8fc9c7f9f5c194a769 Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Fri, 19 Apr 2013 01:27:24 +0200
Subject: [PATCH] Show IPv4 clients by their IPv4 address instead of with a
 v4-mapped address.

---
 client.cpp | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/client.cpp b/client.cpp
index 28e1f06..0c38a44 100644
--- a/client.cpp
+++ b/client.cpp
@@ -32,8 +32,19 @@ Client::Client(int sock)
 	if (getpeername(sock, reinterpret_cast<sockaddr *>(&addr), &addr_len) == -1) {
 		log_perror("getpeername");
 		remote_addr = "";
+		return;
+	}
+
+	char buf[INET6_ADDRSTRLEN];
+	if (IN6_IS_ADDR_V4MAPPED(&addr.sin6_addr)) {
+		// IPv4 address, really.
+		if (inet_ntop(AF_INET, &addr.sin6_addr.s6_addr32[3], buf, sizeof(buf)) == NULL) {
+			log_perror("inet_ntop");
+			remote_addr = "";
+		} else {
+			remote_addr = buf;
+		}
 	} else {
-		char buf[INET6_ADDRSTRLEN];
 		if (inet_ntop(addr.sin6_family, &addr.sin6_addr, buf, sizeof(buf)) == NULL) {
 			log_perror("inet_ntop");
 			remote_addr = "";
-- 
2.39.2