IPV6 address in host header, needs clarification

Following RFC 2732 & integrating with HTTP 1.1:

> > The problem I have is in the Host field in the HTTP 1.1 header
> > 
> > It says:
> > 
> > Host hostname
> > 
> > or
> > 
> > Host hostname:port
> > 
> > If hostname is an IPv6 literal address, then there is an ambiguity due
> > the colon
> > 
> > example:
> > 
> > Host 3ffe::1:8080
> > 
> > Does this mean hostname is 3ffe::1 and port 8080 or hostname
> > 3ffe::1:8080 and default port 80 ?
> > 
> > The only way to remove the ambiguity is to make the use of [ ] around
> > the IPv6
> > literal address madatory. Such as:
> > 
> > Host [3ffe::1]:8080
> > 
> > or
> > 
> > Host [3ffe::1:8080]
> > 
> > 
> > We ran into this problem at Connectathon 2000.