diff --git a/paramiko/client.py b/paramiko/client.py
index ff31c97..ce14f66 100644
--- a/paramiko/client.py
+++ b/paramiko/client.py
@@ -273,7 +273,7 @@ class SSHClient (object):
             establishing an SSH session
         @raise socket.error: if a socket error occurred while connecting
         """
-        for (family, socktype, proto, canonname, sockaddr) in socket.getaddrinfo(hostname, port):
+        for (family, socktype, proto, canonname, sockaddr) in socket.getaddrinfo(hostname, port, socket.AF_UNSPEC, socket.SOCK_STREAM):
             if socktype == socket.SOCK_STREAM:
                 af = family
                 addr = sockaddr
diff --git a/paramiko/transport.py b/paramiko/transport.py
index 3553989..dd04206 100644
--- a/paramiko/transport.py
+++ b/paramiko/transport.py
@@ -285,7 +285,7 @@ class Transport (threading.Thread):
         if type(sock) is tuple:
             # connect to the given (host, port)
             hostname, port = sock
-            for (family, socktype, proto, canonname, sockaddr) in socket.getaddrinfo(hostname, port):
+            for (family, socktype, proto, canonname, sockaddr) in socket.getaddrinfo(hostname, port, socket.AF_UNSPEC, socket.SOCK_STREAM):
                 if socktype == socket.SOCK_STREAM:
                     af = family
                     addr = sockaddr