diff --git a/source/eventcore/driver.d b/source/eventcore/driver.d
index da7db14..9a2d65f 100644
--- a/source/eventcore/driver.d
+++ b/source/eventcore/driver.d
@@ -78,7 +78,7 @@ interface EventDriverCore {
 
 interface EventDriverSockets {
 @safe: /*@nogc:*/ nothrow:
-	StreamSocketFD connectStream(scope Address peer_address, ConnectCallback on_connect);
+	StreamSocketFD connectStream(scope Address peer_address, scope Address bind_address, ConnectCallback on_connect);
 	StreamListenSocketFD listenStream(scope Address bind_address, AcceptCallback on_accept);
 	void waitForConnections(StreamListenSocketFD sock, AcceptCallback on_accept);
 	ConnectionState getConnectionState(StreamSocketFD sock);
diff --git a/source/eventcore/drivers/libasync.d b/source/eventcore/drivers/libasync.d
index f161638..f591528 100644
--- a/source/eventcore/drivers/libasync.d
+++ b/source/eventcore/drivers/libasync.d
@@ -78,7 +78,7 @@ final class LibasyncEventDriverCore : EventDriverCore {
 
 final class LibasyncEventDriverSockets : EventDriverSockets {
 @safe: /*@nogc:*/ nothrow:
-	override StreamSocketFD connectStream(scope Address peer_address, ConnectCallback on_connect)
+	override StreamSocketFD connectStream(scope Address peer_address, scope Address bind_address, ConnectCallback on_connect)
 	{
 		assert(false, "TODO!");
 	}
diff --git a/source/eventcore/drivers/posix.d b/source/eventcore/drivers/posix.d
index eb136cb..5ab5368 100644
--- a/source/eventcore/drivers/posix.d
+++ b/source/eventcore/drivers/posix.d
@@ -200,7 +200,7 @@ final class PosixEventDriverSockets(Loop : PosixEventLoop) : EventDriverSockets
 
 	this(Loop loop) { m_loop = loop; }
 
-	final override StreamSocketFD connectStream(scope Address address, ConnectCallback on_connect)
+	final override StreamSocketFD connectStream(scope Address address, scope Address bind_address, ConnectCallback on_connect)
 	{
 		auto sock = cast(StreamSocketFD)createSocket(address.addressFamily, SOCK_STREAM);
 		if (sock == -1) return StreamSocketFD.invalid;
@@ -208,12 +208,17 @@ final class PosixEventDriverSockets(Loop : PosixEventLoop) : EventDriverSockets
 		void invalidateSocket() @nogc @trusted nothrow { closeSocket(sock); sock = StreamSocketFD.invalid; }
 
 		int bret;
-		() @trusted { // scope
-			scope bind_addr = new UnknownAddress;
-			bind_addr.name.sa_family = cast(ushort)address.addressFamily;
-			bind_addr.name.sa_data[] = 0;
-			bret = bind(sock, bind_addr.name, bind_addr.nameLen);
+		() @trusted { // scope + bind()
+			if (bind_address !is null) {
+				bret = bind(sock, bind_address.name, bind_address.nameLen);
+			} else {
+				scope bind_addr = new UnknownAddress;
+				bind_addr.name.sa_family = cast(ushort)address.addressFamily;
+				bind_addr.name.sa_data[] = 0;
+				bret = bind(sock, bind_addr.name, bind_addr.nameLen);
+			}
 		} ();
+
 		if (bret != 0) {
 			invalidateSocket();
 			on_connect(sock, ConnectStatus.bindFailure);
diff --git a/source/eventcore/drivers/winapi.d b/source/eventcore/drivers/winapi.d
index 209c7ec..3b71698 100644
--- a/source/eventcore/drivers/winapi.d
+++ b/source/eventcore/drivers/winapi.d
@@ -85,7 +85,7 @@ final class WinAPIEventDriverCore : EventDriverCore {
 
 final class WinAPIEventDriverSockets : EventDriverSockets {
 @safe: /*@nogc:*/ nothrow:
-	override StreamSocketFD connectStream(scope Address peer_address, ConnectCallback on_connect)
+	override StreamSocketFD connectStream(scope Address peer_address, scope Address bind_address, ConnectCallback on_connect)
 	{
 		assert(false, "TODO!");
 	}