<!--- Please DO NOT remove the automatically added 'new issue' label --> <!--- Provide a general summary of the issue in the Title --> ## Current Behavior <!--- Tell us what happens instead of the expected behavior --> Now on 2.2.0 if we ping a node that is currently offline, we get a 422 error with ``` { "status": "UNKNOWN_FAILURE", "error": "Network monitoring error: error while pinging peer 12D3KooWQrse7uTpuSmqpwmMiwrDjWqjBZi3UEywU73FtaMkpr8n: ping error" } ``` ## Expected Behavior <!--- Tell us what should happen --> Before on 2.1.5 we were getting 422 with: ``` {"status":"TIMEOUT"} ```