which with remote Ohai doesn't seem to work as expected

[tas50]

The Network plugin has a check to see if the ip command exists:

if which("IP")

if this fails it falls back to route and executes:

shell_out("route -n")

When remote ohai is run against a Unifi UDM Pro:

[2021-05-10T20:58:54-07:00] DEBUG: [SSH] root@172.16.1.1 cmd = stat -L /bin/ip 2>/dev/null --printf '%s
%f
%U
%u
%G
%g
%X
%Y
%C'
[2021-05-10T20:58:54-07:00] DEBUG: [SSH] root@172.16.1.1 cmd = stat -L /sbin/ip 2>/dev/null --printf '%s
%f
%U
%u
%G
%g
%X
%Y
%C'
[2021-05-10T20:58:54-07:00] DEBUG: [SSH] root@172.16.1.1 cmd = stat -L /usr/bin/ip 2>/dev/null --printf '%s
%f
%U
%u
%G
%g
%X
%Y
%C'
[2021-05-10T20:58:54-07:00] DEBUG: [SSH] root@172.16.1.1 cmd = stat -L /usr/sbin'
'/ip 2>/dev/null --printf '%s
%f
%U
%u
%G
%g
%X
%Y
%C'
[2021-05-10T20:58:54-07:00] DEBUG: [SSH] root@172.16.1.1 cmd = stat -L /usr/local/sbin/ip 2>/dev/null --printf '%s
%f
%U
%u
%G
%g
%X
%Y
%C'
[2021-05-10T20:58:54-07:00] DEBUG: [SSH] root@172.16.1.1 cmd = stat -L /usr/local/bin/ip 2>/dev/null --printf '%s
%f
%U
%u
%G
%g
%X
%Y
%C'
[2021-05-10T20:58:54-07:00] DEBUG: [SSH] root@172.16.1.1 cmd = stat -L /usr/sbin/ip 2>/dev/null --printf '%s
%f
%U
%u
%G
%g
%X
%Y
%C'
[2021-05-10T20:58:55-07:00] DEBUG: [SSH] root@172.16.1.1 cmd = route -n

It's clearly failing to find the IP command which is there:

# which ip
/sbin/ip