diff --git a/include/libtorrent/enum_net.hpp b/include/libtorrent/enum_net.hpp
index 431b05be0..cb34949e5 100644
--- a/include/libtorrent/enum_net.hpp
+++ b/include/libtorrent/enum_net.hpp
@@ -62,6 +62,9 @@ namespace libtorrent {
 		address netmask;
 		char name[64];
 		int mtu;
+		// an interface is preferred if its address is
+		// not tenative/duplicate/deprecated
+		bool preferred = true;
 	};
 
 	struct ip_route
diff --git a/src/enum_net.cpp b/src/enum_net.cpp
index 3690d3d2b..757c246fd 100644
--- a/src/enum_net.cpp
+++ b/src/enum_net.cpp
@@ -617,6 +617,7 @@ namespace libtorrent {
 				{
 					if (!valid_addr_family(unicast->Address.lpSockaddr->sa_family))
 						continue;
+					r.preferred = unicast->DadState == IpDadStatePreferred;
 					r.interface_address = sockaddr_to_address(unicast->Address.lpSockaddr);
 					ret.push_back(r);
 				}
diff --git a/src/session_impl.cpp b/src/session_impl.cpp
index 34cd55e5e..43a9b49b6 100644
--- a/src/session_impl.cpp
+++ b/src/session_impl.cpp
@@ -310,6 +310,8 @@ namespace aux {
 		{
 			for (auto const& ipface : ifs)
 			{
+				if (!ipface.preferred)
+					continue;
 				if (ipface.interface_address.is_v4())
 					continue;
 				if (ipface.interface_address.is_loopback())