fixed nginx-startup errors on systems with net.ipv6.bindv6only=0

Florian Schaal

2016-03-08 3279f891ed89470b09fe9137970ca86fa5c50d5d

 install/tpl/nginx_ispconfig.vhost.master

@@ -1,6 +1,6 @@
server {
        listen {vhost_port};
        listen [::]:{vhost_port};
        listen [::]:{vhost_port} ipv6only=on;
      ssl {ssl_on};
      {ssl_comment}ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
        {ssl_comment}ssl_certificate /usr/local/ispconfig/interface/ssl/ispserver.crt;