$ ip addr show dev enp5s0
inet 192.168.0.3/24
$ ip addr show dev wlp4s0
inet 10.42.0.1/24
看起來是 nmcli 呼叫了這個：
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
nobody 3383 0.0 0.0 15724 4292 ? S 6月20 0:28 /usr/sbin/dnsmasq --conf-file=/dev/null --no-hosts --keep-in-foreground --bind-interfaces --except-interface=lo --clear-on-reload --strict-order --listen-address=10.42.0.1 --dhcp-range=10.42.0.10,10.42.0.254,60m --dhcp-leasefile=/var/lib/NetworkManager/dnsmasq-wlp4s0.leases --pid-file=/run/nm-dnsmasq-wlp4s0.pid --conf-dir=/etc/NetworkManager/dnsmasq-shared.d