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Hi. I'm jon.404, a Unix/Linux/Database/Openstack/Kubernetes Administrator, AWS/GCP/Azure Engineer, mathematics enthusiast, and amateur philosopher. This is where I rant about that which upsets me, laugh about that which amuses me, and jabber about that which holds my interest most: *nix.
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2 != 3, even for very large values of 2

Posted 04-04-2016 at 06:00 PM by rocket357 (Musings on technology, philosophy, and life in the corporate world)

Spent the past 20 minutes troubleshooting an OpenVPN issue.

Problem: OpenVPN client connects, pulls an IPv4 address, but does not get route information. Manually added routes don't allow ping.

Solution: tap devices cannot talk to tun devices, at least not directly/natively. tap devices are layer 2. tun devices are layer 3. 2, no matter how close it gets to 3, is simply not 3. (ARP tries hard to prove otherwise, but as there is no such thing as a L3 header in...
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