random notes...

DNS search suffix and dhclient

For a long time I did not really care about DNS search suffixes. Suddenly, a few months ago, I realized that it would be nice if I could use the same URL (bookmarks, etc.) to reach my laptop, no matter which local network I am currently using.

I was aware that I can use resolv.conf(5) but editing your /etc/resolv.conf and using DHCP is often not a good idea because it might get overwritten. Fortunately most (open) router operation systems support dnsmasq which is capable of providing IP addresses and supporting local DNS resolution.

Anyway, sometimes adding a DNS search suffix only to your local computer is just what you need. In this case dhclient.conf(5) might become handy.

append domain-search "", "";

The line above adds two suffixes to the DNS resolution list so instead of ssh one only need to type ssh server. The manual page for dhcp-options(5) lists other useful options with can be used to configure the DHCP client.