varnish-configuration.vcl

sub vcl_fetch {
    # Drop any cookies WordPress (except for wp-login/wp-admin) tries to send back to the client.
    if (!(req.url ~ "wp-(login|admin)")) {
        unset beresp.http.set-cookie;
    }
}

sub vcl_recv {
      # Drop any cookies sent to WordPress.
      if ( ! ( req.url ~ "wp-(login|admin)" ) ) {
      unset req.http.cookie;
}