Không được!
[abache@arch ~]$ sudo dhcpcd wlp7s0
dhcpcd[652]: version 6.3.2 starting
/usr/lib/resolvconf/libc: line 191: /etc/resolv.conf: Permission denied
/usr/lib/resolvconf/libc: line 191: /etc/resolv.conf: Permission denied
dhcpcd[652]: DUID 00:01:00:01:1a:de:75:2c:30:f9:ed:a3:15:f3
dhcpcd[652]: wlp7s0: IAID e6:d7:3d:8d
dhcpcd[652]: wlp7s0: soliciting an IPv6 router
dhcpcd[652]: wlp7s0: soliciting a DHCP lease
dhcpcd[652]: wlp7s0: no IPv6 Routers available
dhcpcd[652]: wlp7s0: offered 192.168.1.2 from 192.168.1.1
dhcpcd[652]: timed out
dhcpcd[652]: exited
[abache@arch ~]$ ping -c 3
www.google.com
ping: unknown host
www.google.com
[abache@arch ~]$
Tạm thời phải set 192.168 để vào post cái này.