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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    1. Hector Martin‏ @marcan42 30 Aug 2017
      • Report Tweet
      • Report NetzDG Violation

      In today's episode of Broken Software I Spent Five Hours Debugging, @OpenVPN's TAP mode is subtly but insidiously broken.

      1 reply 5 retweets 19 likes
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      Hector Martin‏ @marcan42 30 Aug 2017
      • Report Tweet
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      Turns out it bounces packets back to the source if it thinks the destination lives there. That's Bad™. Breaks other switches' MAC tables.

      11:44 AM - 30 Aug 2017
      • 3 Retweets
      • 8 Likes
      • クルって Lawly Arrigo Triulzi mr. waddlesplash Eric Doctor Danger Kazo hex waxwing :(){ :|: &};: Chris
      2 replies 3 retweets 8 likes
        1. Hector Martin‏ @marcan42 30 Aug 2017
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          Reported and patched. https://community.openvpn.net/openvpn/ticket/931 …

          0 replies 1 retweet 16 likes
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        1. Shoghi‏ @shoghicp 30 Aug 2017
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          Replying to @marcan42 @OpenVPN

          I had a router send me packets back through OpenVPN tap that had the checksum broken (offload), but only over a tap and not tuns

          0 replies 0 retweets 1 like
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