[plt-scheme] web-server and IPv6?

Jay McCarthy writes:
 > And Matthew's email on IPv6 says:
 > 
 > "* By default, `tcp-listen' and `udp-open-socket' create sockets that
 >   work with IPv4, only. For `tcp-connect', etc., the hostname
 >   determines the protocol family."
 > 
 > This implies that the web-server creates sockets that work with IPv4,
 > unless given a new IP.

That's what I thought, too.  I guess I don't understand this error
message, then:

Welcome to MzScheme version 299.405, Copyright (c) 2004-2005 PLT Scheme, Inc.
> (tcp-listen 1234)
tcp-listen: listen on 1234 failed (Address family not supported by protocol; errno=97)

--dougo at place.org