don't add multiple router addresses

RouterContext.cpp

@@ -53,6 +53,8 @@ namespace i2p
 		bool ipv6; i2p::config::GetOption("ipv6", ipv6);
 		bool nat;  i2p::config::GetOption("nat", nat);
 		std::string ifname; i2p::config::GetOption("ifname", ifname);
+		std::string ifname4; i2p::config::GetOption("ifname4", ifname4);
+		std::string ifname6; i2p::config::GetOption("ifname6", ifname6);
 		if (ipv4)
 		{
 			std::string host = "127.0.0.1";
@@ -61,6 +63,10 @@ namespace i2p
 			else if (!nat && !ifname.empty())
 				/* bind to interface, we have no NAT so set external address too */
 				host = i2p::util::net::GetInterfaceAddress(ifname, false).to_string(); // v4
+
+			if(ifname4.size())
+				host = i2p::util::net::GetInterfaceAddress(ifname4, false).to_string();
+
 			routerInfo.AddSSUAddress (host.c_str(), port, routerInfo.GetIdentHash ());
 			routerInfo.AddNTCPAddress (host.c_str(), port);
 		}
@@ -71,24 +77,13 @@ namespace i2p
 				i2p::config::GetOption("host", host);
 			else if (!ifname.empty()) 
 				host = i2p::util::net::GetInterfaceAddress(ifname, true).to_string(); // v6
-			routerInfo.AddSSUAddress (host.c_str(), port, routerInfo.GetIdentHash ());
-			routerInfo.AddNTCPAddress (host.c_str(), port);
-		}
 
-		std::string ifname4; i2p::config::GetOption("ifname4", ifname4);
-		if(ifname4.size())
-		{
-			std::string host = i2p::util::net::GetInterfaceAddress(ifname4, false).to_string();
-			routerInfo.AddSSUAddress (host.c_str(), port, routerInfo.GetIdentHash());
+			if(ifname6.size())
+				host = i2p::util::net::GetInterfaceAddress(ifname6, true).to_string();
+
+			routerInfo.AddSSUAddress (host.c_str(), port, routerInfo.GetIdentHash ());
 			routerInfo.AddNTCPAddress (host.c_str(), port);
 		}
-		std::string ifname6; i2p::config::GetOption("ifname6", ifname6);
-		if (ifname6.size())
-		{
-			std::string host = i2p::util::net::GetInterfaceAddress(ifname6, true).to_string();
-			routerInfo.AddSSUAddress (host.c_str(), port, routerInfo.GetIdentHash());
-			routerInfo.AddNTCPAddress (host.c_str(), port);	
-		}
 		
 		routerInfo.SetCaps (i2p::data::RouterInfo::eReachable | 
 			i2p::data::RouterInfo::eSSUTesting | i2p::data::RouterInfo::eSSUIntroducer); // LR, BC