From 8f737d28a6a48070b5d3049fc183cf47c474fb0a Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Sun, 13 May 2012 15:06:16 +0200
Subject: [PATCH] Only encode IPv4 addresses in IRC nicks

---
 src/irc.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/irc.cpp b/src/irc.cpp
index 525bd7a8..4baffedb 100644
--- a/src/irc.cpp
+++ b/src/irc.cpp
@@ -246,11 +246,12 @@ void ThreadIRCSeed2(void* parg)
                 return;
         }
 
+        CNetAddr addrIPv4("1.2.3.4"); // arbitrary IPv4 address to make GetLocal prefer IPv4 addresses
         CService addrLocal;
         string strMyName;
-        if (GetLocal(addrLocal, &addrConnect))
+        if (GetLocal(addrLocal, &addrIPv4))
             strMyName = EncodeAddress(GetLocalAddress(&addrConnect));
-        else
+        if (strMyName == "")
             strMyName = strprintf("x%u", GetRand(1000000000));
 
         Send(hSocket, strprintf("NICK %s\r", strMyName.c_str()).c_str());