node.js - Mongoose Can't Connect Without Internet -

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i have mongodb server running on localhost:27017, , while can run node.js app fine, when disconnect internet mongoose throws error 

error: failed connect [localhost:27017]

note can still connect mongodb server mongo shell client. also, if start app first , lose internet connection, app can access database fine offline. why can't start without internet?

edit: here error in full

events.js:85       throw er; // unhandled 'error' event             ^ error: failed connect [localhost:27017]     @ null.<anonymous> (<my app>\node_modules\mongoose\ node_modules\mongodb\lib\mongodb\connection\server.js:555:74)     @ emit (events.js:118:17)     @ null.<anonymous> (<my app>\node_modules\mongoose\ node_modules\mongodb\lib\mongodb\connection\connection_pool.js:156:15)     @ emit (events.js:110:17)     @ socket.<anonymous> (<my app>\node_modules\mongoos e\node_modules\mongodb\lib\mongodb\connection\connection.js:534:10)     @ socket.emit (events.js:107:17)     @ net.js:923:16     @ process._tickcallback (node.js:355:11) [nodemon] app crashed - waiting file changes before starting...

edit: wording

use 127.0.0.1 instead of localhost. turning off wifi interface os no longer able resolve localhost.


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