Best Practice Lease Time - https://lazyadmin.nl/home-network/dhcp-lease-time/

Speed up DHCP disabling ARP - https://wiki.archlinux.org/index.php/dhcpcd#Speed_up_DHCP_by_disabling_ARP_probing

Fallback Profile - https://wiki.archlinux.org/index.php/dhcpcd#Fallback_profile

https://www.blackmoreops.com/2014/09/18/connect-to-wifi-network-from-command-line-in-linux/

https://www.debian-fr.org/t/serveur-dns-timout-resolv-conf-et-dhclient/23579/10

Complete https://wiki.archlinux.org/index.php/Resolv.conf

add to end http://askubuntu.com/questions/130452/how-do-i-add-a-dns-server-via-resolv-conf

https://www.raymond.cc/blog/how-to-block-pornographic-websites-without-spending-money-on-software/

https://www.privacy-handbuch.de/handbuch_93d.htm

https://wiki.partipirate.org/DNS

https://www.fdn.fr/actions/dns/

https://www.opennicproject.org/

https://opennameserver.org/

https://www.quad9.net/