On Sun, Sep 18, 2022, 10:12 AM Owen Hogarth <gurenchan@gmail.com> wrote:

ping me
PING me(me ()) 56 data bytes
64 bytes from me (): icmp_seq=1 ttl=64 time=0.036 ms
64 bytes from me (): icmp_seq=2 ttl=64 time=0.042 ms
64 bytes from me (): icmp_seq=3 ttl=64 time=0.035 ms
64 bytes from me (): icmp_seq=4 ttl=64 time=0.038 ms

hostname -f
me

On Sun, Sep 18, 2022 at 8:33 AM Jin-oh Kang <jinoh.kang.kr@gmail.com> wrote:
Also, what does "hostname -f" command show?

Sorry for the late reply. The error message "Device or resource busy" indicates a potential problem in communicating with the DNS resolver.

Maybe the issue has something to do with the hostname or the DNS resolver (dnsmasq / systemd-resolved), but I cannot pinpoint the exact cause.

Perhaps try on a new Linux installation (with another hostname) and see if it works?

Thanks!