There's a long way to go, the code is crappy, there's support for nothing but INET sockets, whatever you want, but...
the minimal skeleton versions of IO::Socket and LWP::Simple are working in Perl 6. This happened thanks to Jonathan Worthington, as usual, Carl Masak, Martin Berends and me, who wrote the crappy code.
So here's the final lwp-get.p6:
#!/usr/bin/perl6
use LWP::Simple;
say LWP::Simple.get('http://www.rakudo.org');
This was one of our goals for the 2009 Oslo Perl6 Hackaton. We did it! There's a huge lot of work still to do, but one significant step is done! Work is underway for server socket support (accept, bind, etc...) and fully speccing the sockets classes.