OpenVPN v2.7.4

Bugfixes:

• using --dns server ... style configs on Windows with win-dco would lead to erroneously enabling "DnsSecValidationRequired : True", possibly breaking VPN DNS resolution. Pushing --dns server ... dnssec no can be used as a workaround until clients can be updated. (Github: openvpn#1024)
• correct comments in the --dns-up-down platform scripts relating to dns_server_..._dnssec values.
• fix release-only build of pkcs11-helper vcpkg port, do not try to install files from debug build.
• mbedTLS builds will now provide a proper error message if a tls-group statement with no valid groups is encountered (used to run into SSL handshake failure later on).
• --enable-strict and --enable-strict-options configure flags have been removed (because they did not actually do anything anymore)

For details see Changes.rst

Windows Client: Community MSI installer for Windows client can be found at Community Downloads.

Linux Packages: Instructions for installing community-maintained Linux packages can be found in the Community Wiki.

Full Changelog: https://github.com/OpenVPN/openvpn/compare/v2.7.3...v2.7.4