cvs woes [HELP!]

cvs users,

I just tried to check out my branch afresh, using the command:

cvs -t -z3 -d:ext:rvenning@cvs.squid.sourceforge.net:/cvsroot/squid co
-j ipv6 squid

which I thought was the way to get my branch, which has the tag ipv6.
The problem is though, that most if not all files have a merge conflict, ie.
something along the lines of

/*
<<<<<<< authenticate.c
* $Id: authenticate.c,v 1.12 2001/02/07 19:11:48 hno Exp $
=======
* $Id: authenticate.c,v 1.4.6.2 2001/02/28 05:24:02 rvenning Exp $
>>>>>>> 1.4.6.2
*

at the top. I know that this isn't what is actually in the cvs source
under my
tag by looking through the web interface...

Can anybody correct my command line?

Roger.

-- 
-------------------------------------------------------------
Roger Venning	\ Do not go gentle into that good night
Melbourne        \ Rage, rage against the dying of the light.
Australia <r.venning@bipond.com>                 Dylan Thomas