OpenVPN 2.6.2

What's new in this version:

Fixed:
- dco: don't use NetLink to exchange control packets
- dco: print version to log if available
- dco-linux: remove M_ERRNO flag when printing netlink error message
- multi: don't call DCO APIs if DCO is disabled
- dco-freebsd: use m->instances[] instead of m->hash
- dco-linux: implement dco_get_peer_stats{, multi} API
- Set netlink socket to be non-blocking
- Ensure n = 2 is set in key2 struct in tls_crypt_v2_unwrap_client_key
- Fix memory leaks in open_tun_dco()
- Fix memory leaks in HMAC initial packet generation
- Use key_state instead of multi for tls_send_payload parameter
- Make sending plain text control message session aware
- Only update frame calculation if we have a valid link sockets
- Improve description of compat-mode
- Simplify --compress parsing in options.c
- Refuse connection if server pushes an option contradicting allow-compress
- Add 'allow-compression stub-only' internally for DCO
- Parse compression options and bail out when compression is disabled
- tests/unit_tests: Fix 'make distcheck' with subdir-objects enabled
- preparing release 2.6.2
- dns option: allow up to eight addresses per server
- dco: print FreeBSD version
- Support --inactive option for DCO
- Fix '--inactive <time> 0' behavior for DCO
- Print DCO client stats on SIGUSR2
- Don't overwrite socket flags when using DCO on Windows
- using OpenSSL3 API for EVP PKEY type name reporting
- Bugfix: Convert ECDSA signature form pkcs11-helper to DER encoded form
- Import some sample certificates into Windows store for testing
- Add tests for finding certificates in Windows cert store
- Refactor SSL_CTX_use_CryptoAPI_certificate()
- Add a test for signing with certificates in Windows store
- Unit tests: add test for SSL_CTX_use_Cryptoapi_certificate()
- Improve error message on short read from socks proxy
- Make error in setting metric for IPv6 interface non-fatal