I don’t do enough system admin to enjoy it when I do. (Does anyone?)<\/p>\n
When you upgrade Ubuntu, you lose a lot of the software you’d installed. There’s a list of system admin tips that I try to remember<\/a> here. (Which reminds me, I should find a better home for it for when Twitter dies.)<\/p>\n I couldn’t resolve names of Macs in my local network. I should point out what a shame it is that Mac addresses aren’t the same thing as MAC addresses<\/a>, since Google as my primary system admin resource.<\/p>\n That’s the work of avahi-daemon and friends<\/a> (a\/k\/a Zeroconf<\/a> and Bonjour). For awhile I thought that something had broken there. But eventually, I figured out that was working, i.e., the problem lay elsewhere.<\/p>\n I wondered if they’d added a firewall to 16.10. They did (or, for all I know, they’ve always had one) called ufw<\/em> (more here<\/a>), but it’s (still) not enabled by default. If that ever changes, I can learn what to do about it here<\/a>.<\/p>\n After about an hour, I found out there is something called nss-resolve<\/em>. Which is actually a pretty clever idea. Except it wasn’t working. Its configuration file is well documented<\/a> here. Good luck figuring that out.<\/p>\n Finally, I just compared my 16.10 \/etc\/nss-switch.conf<\/tt> file with the one from a working installation of 16.04.1. HAH!<\/strong><\/p>\n Not only was there a difference, it gave me a string I could Google. That brought me to this: http:\/\/askubuntu.com\/questions\/837982\/how-to-configure-local-dns-lookup-in-ubuntu-16-10<\/a><\/p>\n