MarcoM <mascagni.marco_togliere_@tiscali.it> wrote:
> I installed OpenBSD 3.8 and I'm trying to use kdm to connect from my w2k
> box.
> I have enabled xdmcp in kdmrc and put the following line in
> /etc/sysctl.conf:
> net.inet6.ip6.v6only=0
> but I can connect from remote.
> The matter (I think) is that the command sysctl -w net.inet6.ip6.v6only=0
> returns "operation not permitted".
> What can I do?

I'm not at all sure what you are trying to do, and what exactly fails,
but sysctl requires root priviliges. It is best to use sudo:

$ sudo sysctl -w net.inet6.ip6.v6only

You should enter your login password when prompted.

For this to work, you have to add yourself to /etc/sudoers. See the man
page; there is also a commented-out version of a rule that will allow
all people in the group wheel to run sudo. Uncommenting this is usually
the way to go; make sure your account is in the proper group.

Joachim