From 4ff83fe0bf4bf76d09bc0f1f52ea5d497c700cf5 Mon Sep 17 00:00:00 2001
From: twisterarmy <twisterarmy@project>
Date: Wed, 30 Apr 2025 09:12:38 +0300
Subject: [PATCH] respect bind address and family for DHT services #254

---
 src/twister.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/twister.cpp b/src/twister.cpp
index 49c21e34..e000490d 100644
--- a/src/twister.cpp
+++ b/src/twister.cpp
@@ -328,6 +328,17 @@ void ThreadWaitExtIP()
 
     int listen_port = GetListenPort() + LIBTORRENT_PORT_OFFSET;
     std::string bind_to_interface = "";
+    if (mapArgs.count("-bind")) { // respect bind address and family for DHT services (#254)
+        BOOST_FOREACH(std::string strBind, mapMultiArgs["-bind"]) {
+            CService addrBind;
+            if (Lookup(strBind.c_str(), addrBind, GetListenPort(), false))
+                bind_to_interface = strBind.c_str();
+            else
+                printf("Cannot resolve -bind address: '%s'", strBind.c_str());
+            break; // we are using only the first value (if there are multiple `-bind` options),
+                   // the application behavior may require a separate option for these needs @TODO
+        }
+    }
     proxyType proxyInfoOut;
     m_usingProxy = GetProxy(NET_IPV4, proxyInfoOut);