too many colons in address error in IPv6 requests

[jae1911]

I have a media-repo behind Traefik, and it throws an exception too many colons in address when accessing certain media.
This causes some media to fail loading.
For instance:

media-repo-1  | time="2024-08-09 20:59:16.768 Z" level=error msg="address 2001:14ba:a0b2:be00:e87c:1df1:40db:e8d5: too many colons in address"
media-repo-1  | time="2024-08-09 20:59:16.769 Z" level=info msg="Replying with result: _responses.ErrorResponse {Code:M_NOT_FOUND Message:authentication is required to download this media InternalCode:M_UNAUTHORIZED}" contentLength=0 contentType="" host=matrix.777.tf method=GET queryString="allow_redirect=true" remoteAddr="172.18.0.9:49652" requestId=REQ-176 resource=/_matrix/media/v3/download/matrix.org/sodALOObMxAKjqfcWuLXOPmC userAgent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Element/1.11.73 Chrome/126.0.6478.127 Electron/31.2.0 Safari/537.36"

When trying to load media from a public room using Element.

For instance, during a 5 minutes log snapshot, you can see it pretty often: https://gist.github.com/jae1911/90f51482c7ed6539b0c95874ec865fbb (the IP shown belongs to a residential ISP from Finland and is my own)

[ricardo-duarte-av]

I'm being affected with this one as well...

[turt2live]

I think this is a duplicate of #602