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add note about incompatibility with ECN

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1 parent f46adea commit c65e43323ef8124b5e1200d492dde95dcde0f6a7 @sqs sqs committed May 4, 2011
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  1. +6 −0 INSTALL-Linux.markdown
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@@ -58,6 +58,12 @@ Try it out
See the included `README.markdown` file for ways to try out tcpcrypt.
+Reported issues
+---------------
+
+Tcpcrypt is incompatible with ECN (explicit congestion notification, RFC 3168). To disable ECN (if you know what you're doing), run `sudo sysctl net.ipv4.tcp_ecn=0`. Reported by jech at https://github.com/sorbo/tcpcrypt/issues/7.
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iptables firewall setup
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