Use varnishreload on Debian family as stated on https://varnish-cache.org/docs/6.0/whats-new/upgrading-6.0.html#services
Use varnishreload on Debian family as stated on https://varnish-cache.org/docs/6.0/whats-new/upgrading-6.0.html#services

BashtonLtd/puppet-varnish,BashtonLtd/puppet-varnish