fix ipv6 fallback address

libi2pd/RouterContext.cpp

@@ -79,7 +79,7 @@ namespace i2p
 		}
 		if (ipv6)
 		{
-			std::string host = "::";
+			std::string host = "::1";
 			if (!i2p::config::IsDefault("host") && !ipv4) // override if v6 only
 				i2p::config::GetOption("host", host);
 			else if (!ifname.empty())
@@ -113,7 +113,6 @@ namespace i2p
 					PublishNTCP2Address (port, true);
 			}
 		}
-
 	}
 
 	void RouterContext::UpdateRouterInfo ()

libi2pd/util.cpp

@@ -295,6 +295,9 @@ namespace net
 	{
 #ifdef WIN32
 		LogPrint(eLogError, "NetIface: cannot get address by interface name, not implemented on WIN32");
+		if(ipv6)
+			return boost::asio::ip::address::from_string("::1");
+		else
 			return boost::asio::ip::address::from_string("127.0.0.1");
 #else
 		int af = (ipv6 ? AF_INET6 : AF_INET);
@@ -327,7 +330,7 @@ namespace net
 		std::string fallback;
 		if(ipv6)
 		{
-			fallback = "::";
+			fallback = "::1";
 			LogPrint(eLogWarning, "NetIface: cannot find ipv6 address for interface ", ifname);
 		} else {
 			fallback = "127.0.0.1";