Tag Archives: dns

How and why the leap second affected Cloudflare DNS

January 3, 2017 by Bramus! Leave a comment

At midnight UTC on New Year’s Day, deep inside Cloudflare’s custom RRDNS software, a number went negative when it should always have been, at worst, zero. A little later this negative value caused RRDNS to panic. This panic was caught … Continue reading →

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When CCIEs get bored

February 9, 2013 by Bramus! 1 Comment

$ traceroute 216.81.59.173 🙂

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Zero-config development with Apache’s VirtualDocumentRoot and xip.io

November 11, 2012 by Bramus! Leave a comment

# Use name-based virtual hosting. NameVirtualHost *:80 UseCanonicalName Off # ~/Sites/ vhost configuration – sends foo.bar.dev to ~/Sites/bar/foo <VirtualHost *:80> VirtualDocumentRoot /Users/dave/Sites/%2/%1 <Directory "/Users/dave/Sites"> Options Indexes FollowSymLinks MultiViews AllowOverride All Order allow,deny Allow from all </Directory> </VirtualHost> What that VirtualDocumentRoot … Continue reading →

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xip.io – Wildcard DNS for any IP address.

June 8, 2012 by Bramus! Leave a comment

xip.io is a magic domain name that provides wildcard DNS for any IP address. Say your LAN IP address is 10.0.0.1. Using xip.io: 10.0.0.1.xip.io resolves to 10.0.0.1 www.10.0.0.1.xip.io resolves to 10.0.0.1 mysite.10.0.0.1.xip.io resolves to 10.0.0.1 foo.bar.10.0.0.1.xip.io resolves to 10.0.0.1 …and … Continue reading →

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