v0.81.1 fails to parse IPv6 in upstream h3 URL

[timkgh]

v0.81.1

2026/04/13 12:20:38.436360 ERROR running dnsproxy err="configuring proxy: parsing fallback upstreams configuration: parsing error at index 0: cannot prepare the upstream: failed to parse h3://2606:4700:4700::1112/dns-query: parse \"h3://2606:4700:4700::1112/dns-query\": invalid port \":4700:4700::1112\" after host"

It worked in v0.81.0

Update: putting the IPv6 in [] fixes it, i.e. h3://[2606:4700:4700::1112]/dns-query