A solution for softpurges in Magento on Varnish 6.0 many thanks to @IvanChepurnyi

varnish.vcl

vcl 4.1;

import std;
import xkey;

# The minimal Varnish version is 6.0
# For SSL offloading, pass the following header in your proxy server or load balancer: 'X-Forwarded-Proto: https'


backend default {
    .host = "127.0.0.1";
    .port = "8080";
}

acl purge {
    "127.0.0.1";
}

sub vcl_recv {
    if (req.method == "PURGE") {
        if (client.ip !~ purge) {
            return (synth(405, "Method not allowed"));
        }
        if (!req.http.X-Magento-Tags-Pattern) {
            return (synth(400, "X-Magento-Tags-Pattern header required"));
        }

        set req.http.X-Key-Purge = regsuball(req.http.X-Magento-Tags-Pattern, "[\(\)\^\$]", "");
	set req.http.X-Key-Purge = regsuball(req.http.X-Key-Purge, "[,\|]", " ");
        set req.http.X-Key-Purge = regsuball(req.http.X-Key-Purge, "\.\*", "all");
	set req.http.n-gone = xkey.softpurge(req.http.X-Key-Purge);
        return (synth(200, "Purged " + req.http.n-gone + " records"));
    }

    if (req.method != "GET" &&
        req.method != "HEAD" &&
        req.method != "PUT" &&
        req.method != "POST" &&
        req.method != "TRACE" &&
        req.method != "OPTIONS" &&
        req.method != "DELETE") {
          /* Non-RFC2616 or CONNECT which is weird. */
          return (pipe);
    }

    # We only deal with GET and HEAD by default
    if (req.method != "GET" && req.method != "HEAD") {
        return (pass);
    }
   
    # Bypass Shopping cart, Checkout and Search request
    # If your checkout url is firecheckout for example, add: || req.url ~ "/firecheckout"
    if (req.url ~ "/checkout" || req.url ~ "/catalogsearch" || req.url ~ "/firecheckout" || req.url ~ "/postcode-eu") {
        return (pass);
    }

    # normalize url in case of leading HTTP scheme and domain
    set req.url = regsub(req.url, "^http[s]?://", "");

    # collect all cookies
    std.collect(req.http.Cookie);

    # Compression filter. See https://www.varnish-cache.org/trac/wiki/FAQ/Compression
    if (req.http.Accept-Encoding) {
        if (req.url ~ "\.(jpg|jpeg|png|gif|gz|tgz|bz2|tbz|mp3|ogg|swf|flv)$") {
            # No point in compressing these
            unset req.http.Accept-Encoding;
        } elsif (req.http.Accept-Encoding ~ "gzip") {
            set req.http.Accept-Encoding = "gzip";
        } elsif (req.http.Accept-Encoding ~ "deflate" && req.http.user-agent !~ "MSIE") {
            set req.http.Accept-Encoding = "deflate";
        } else {
            # unkown algorithm
            unset req.http.Accept-Encoding;
        }
    }

    # Remove Google gclid parameters to minimize the cache objects
    set req.url = regsuball(req.url,"\?gclid=[^&]+$",""); # strips when QS = "?gclid=AAA"
    set req.url = regsuball(req.url,"\?gclid=[^&]+&","?"); # strips when QS = "?gclid=AAA&foo=bar"
    set req.url = regsuball(req.url,"&gclid=[^&]+",""); # strips when QS = "?foo=bar&gclid=AAA" or QS = "?foo=bar&gclid=AAA&bar=baz"

    # static files are always cacheable. remove SSL flag and cookie
        if (req.url ~ "^/(pub/)?(media|static)/.*\.(ico|css|js|jpg|jpeg|png|gif|tiff|bmp|mp3|ogg|svg|swf|woff|woff2|eot|ttf|otf)$") {
        unset req.http.Https;
        unset req.http.X-Forwarded-Proto;
        unset req.http.Cookie;
    }

    return (hash);
}

sub vcl_hash {
    if (req.http.cookie ~ "X-Magento-Vary=") {
        hash_data(regsub(req.http.cookie, "^.*?X-Magento-Vary=([^;]+);*.*$", "\1"));
    }

    # For multi site configurations to not cache each other's content
    if (req.http.host) {
        hash_data(req.http.host);
    } else {
        hash_data(server.ip);
    }

    # To make sure http users don't see ssl warning
    if (req.http.X-Forwarded-Proto) {
        hash_data(req.http.X-Forwarded-Proto);
    }
    /* {{ design_exceptions_code }} */
}

sub vcl_backend_response {
    if (beresp.http.content-type ~ "text") {
        set beresp.do_esi = true;
    }

    if (bereq.url ~ "\.js$" || beresp.http.content-type ~ "text") {
        set beresp.do_gzip = true;
    }

    # cache only successfully responses and 404s
    if (beresp.status != 200 && beresp.status != 404) {
        set beresp.ttl = 120s;
        set beresp.uncacheable = true;
        return (deliver);
    } elsif (beresp.http.Cache-Control ~ "private") {
        set beresp.uncacheable = true;
        set beresp.ttl = 86400s;
        return (deliver);
    }

    if (beresp.http.X-Magento-Debug) {
        set beresp.http.X-Magento-Cache-Control = beresp.http.Cache-Control;
    }

    if (beresp.http.X-Magento-Tags) {
        set beresp.http.XKey = regsuball(beresp.http.X-Magento-Tags, ",", " ") + " all";
    }

    # validate if we need to cache it and prevent from setting cookie
    # images, css and js are cacheable by default so we have to remove cookie also
    if (beresp.ttl > 0s && (bereq.method == "GET" || bereq.method == "HEAD")) {
        unset beresp.http.set-cookie;
	set beresp.grace = 1h;
        if (bereq.url !~ "\.(ico|css|js|jpg|jpeg|png|gif|tiff|bmp|gz|tgz|bz2|tbz|mp3|ogg|svg|swf|woff|woff2|eot|ttf|otf)(\?|$)") {
            set beresp.http.Pragma = "no-cache";
            set beresp.http.Expires = "-1";
            set beresp.http.Cache-Control = "no-store, no-cache, must-revalidate, max-age=0";
            set beresp.grace = 1m;
        }
    }

   # If page is not cacheable then bypass varnish for 2 minutes as Hit-For-Pass
   if (beresp.ttl <= 0s ||
        beresp.http.Surrogate-control ~ "no-store" ||
        (!beresp.http.Surrogate-Control && beresp.http.Vary == "*")) {
        # Mark as Hit-For-Pass for the next 2 minutes
        set beresp.ttl = 120s;
        set beresp.uncacheable = true;
    }
    return (deliver);
}

sub vcl_hit {
    if (obj.ttl >= 0s) {
        set req.http.cached = "hit";
        return (deliver);
    }
    if (obj.ttl + obj.grace > 0s) {
        set req.http.cached = "stale";
        return (deliver);
    }
    // fetch & deliver once we get the result

    set req.http.cached = "miss";
    return (miss);
}

sub vcl_deliver {
    if (resp.http.X-Magento-Debug) {
        if (resp.http.x-varnish ~ " ") {
            set resp.http.X-Magento-Cache-Debug = "HIT";
        } else {
            set resp.http.X-Magento-Cache-Debug = "MISS";
        }
    } 
   
    if (req.http.cached) {
       set resp.http.X-Cache = req.http.cached;
    } else {
       set resp.http.X-Cache = "miss";
    }

    unset resp.http.X-Magento-Debug;
    unset resp.http.X-Magento-Tags;
    unset resp.http.XKey;
    unset resp.http.X-Powered-By;
    unset resp.http.Server;
    unset resp.http.X-Varnish;
    unset resp.http.Via;
    unset resp.http.Link;
}

It will also set inside the chrome dev tools > Network
Click on Doc, click the 200 document on the left: you will see X-cache

Not cached:

X-Cache: miss

Cached:

X-Cache: hit

Cached but served old version while new is generated

X-Cache: stale

How to install on Hypernode:

Download this varnish.vcl to your server

mkdir -p /data/web/vcl/ && cd $_
wget https://gist.githubusercontent.com/henkvalk/f3b1cee66c1daf65b69630a01b8b096e/raw/e50bdcc74d1647db4ea960138dc2bbdca1700a94/varnish.vcl

Load this varnish.vcl into varnish

varnishadm vcl.load varnish_softpurges /data/web/vcl/varnish.vcl

When successfull it will retrun VCL compiled.

Use this profile:

varnishadm vcl.use varnish_softpurges

When successfull it will retrun VCL 'varnish_softpurges' now active