Unable to load sites using a IPv6 address directly

[rgret-dev]

When typing in a IPV6 address directly e.g. https://[2606:4700:4700::1111] I get the error "unable to resolve host"

After some investigation, we pass the serialized host to LibDNS which isn't correct since IPv6 addresses don't contain square brackets and libcurl seems to have a bug with the CURLOPT_RESOLVE option which I've filed a report for here: https://github.com/curl/curl/issues/16357