Subject: networkctl: the JSON output is different from non-JSON.
From: Ye ZhengMao <yezhengmaolove@xxxxxxxxx>
Date: Fri, 14 Apr 2023 20:17:10 +0800
when I used --json flag to get the network status output, I found that
there was no speed/duplex and other information in the output.
It seems if using JSON output, will not use netlink util ?