ssh: Could not resolve hostname host-01.local: Device or resource busy

OpenSSH_7.6p1 Ubuntu-4ubuntu0.3, OpenSSL 1.0.2n  7 Dec 2017
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug2: resolving "host-01.local" port 22
ssh: Could not resolve hostname host-01.local: Device or resource busy