Arch Linux Install Cannot Enable dhcpd
Welcome to Arch. I believe this has the answers, it's what I used for the install on my laptop. In my case I ran systemctl start [email protected] since my wifi card is identified as wlp3s0, if you don't know for yours you can run ifconfig or specifically for wireless devices iwconfig.
While the question has been answered, I must add that the client daemon is called dhcpcd, not dhcpd (dhcpd is the DHCP server daemon). I spent twenty minutes trying to figure out why that was happening, and it was all because of a simple typo.