SSLCertificateError: version 2.19-r7: SRC_URI: SSL cert error: HTTPSConnectionPool(host='v6web.litech.org', port=443): Max retries exceeded with url: /radvd/dist/radvd-2.19.tar.xz (Caused by SSLError(SSLError(1, '[SSL: SSLV3_ALERT_HANDSHAKE_FAILURE] sslv3 alert handshake failure (_ssl.c:1010)'))): https://v6web.litech.org/radvd/dist/radvd-2.19.tar.xz