Allow binding to the any address, and report failure

src/init.cpp

@@ -611,8 +611,8 @@ bool AppInit2()
         std::string strError;
         if (mapArgs.count("-bind")) {
             BOOST_FOREACH(std::string strBind, mapMultiArgs["-bind"]) {
-                CService addrBind(strBind, GetListenPort(), false);
+                CService addrBind;
-                if (!addrBind.IsValid())
+                if (!Lookup(strBind.c_str(), addrBind, GetListenPort(), false))
                     return InitError(strprintf(_("Cannot resolve -bind address: '%s'"), strBind.c_str()));
                 fBound |= Bind(addrBind);
             }
@@ -625,7 +625,7 @@ bool AppInit2()
 #endif
         }
         if (!fBound)
-            return false;
+            return InitError(_("Not listening on any port"));
     }
 
     if (mapArgs.count("-externalip"))