Signed-off-by: Max Fillinger <maximilian.fillin...@foxcrypto.com>
---
 README.mbedtls | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/README.mbedtls b/README.mbedtls
index 4875822d..d3466fa9 100644
--- a/README.mbedtls
+++ b/README.mbedtls
@@ -11,6 +11,24 @@ This version depends on mbed TLS 2.0 (and requires at least 
2.0.0).
 
 *************************************************************************
 
+Warning:
+
+As of mbed TLS 2.17, it can be licensed *only* under the Apache v2.0 license.
+That license is incompatible with OpenVPN's GPLv2.
+
+If you wish to distribute OpenVPN linked with mbed TLS, there are two options:
+
+ * Ensure that your case falls under the system library exception in GPLv2, or
+
+ * Use an earlier version of mbed TLS. Version 2.16.12 is the last release
+   that may be licensed under GPLv2. Unfortunately, this version is
+   unsupported and won't receive any more updates.
+
+If nothing changes about the license situation, mbed TLS support may be
+deprecated in a future release of OpenVPN.
+
+*************************************************************************
+
 Due to limitations in the mbed TLS library, the following features are missing
 in the mbed TLS version of OpenVPN:
 
-- 
2.20.1



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