<p></p>
<p>I was able to upload a custom VCL that inserts the backend selection snippet you added after the "default condition". It doesn't seem like the best way to do it, though.</p>
<p>I'll ask about IPv6 and HTTP2.</p>

<p style="font-size:small;-webkit-text-size-adjust:none;color:#666;">—<br />You are receiving this because you are subscribed to this thread.<br />Reply to this email directly, <a href="https://github.com/openstreetmap/openstreetmap-website/pull/2714#issuecomment-662551464">view it on GitHub</a>, or <a href="https://github.com/notifications/unsubscribe-auth/AAK2OLLGBMF6NTE6S222NFDR44HCHANCNFSM4O6Q46SA">unsubscribe</a>.<img src="https://github.com/notifications/beacon/AAK2OLL6QEQYHXUMIVYJTCTR44HCHA5CNFSM4O6Q46SKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOE563XKA.gif" height="1" width="1" alt="" /></p>
<script type="application/ld+json">[
{
"@context": "http://schema.org",
"@type": "EmailMessage",
"potentialAction": {
"@type": "ViewAction",
"target": "https://github.com/openstreetmap/openstreetmap-website/pull/2714#issuecomment-662551464",
"url": "https://github.com/openstreetmap/openstreetmap-website/pull/2714#issuecomment-662551464",
"name": "View Pull Request"
},
"description": "View this Pull Request on GitHub",
"publisher": {
"@type": "Organization",
"name": "GitHub",
"url": "https://github.com"
}
}
]</script>