Which repository are necessary in yast to update with the command zypper dup opensuse 11.4 m 5 in future m6 and after in the Rc?
Thank you
John
Maybe you mean zypper update(up)
Read this: Mercurial repositories index
with zypper up http://repo.m5sim.org/m5-stable
Stick with the defaults 
When next Milestone is released, just do zypper dup.
Thanks.
giovanni