vfs_scannedonly does not compile on AIX which does not have MSG_DONTWAIT. Patch will be attached.
Created attachment 5247 [details] MSG_DONTWAIT is not needed, the socket is non-blocking anyway.
fixed with e95e3270d1f3fece7292359d276ce45913a699ac, should be picked to 3.5, too.
Pushed, will be fixed in 3.5.0. Closing out bug report. Thanks!