CentOS - Apr 2012 - modprobe blacklist

Hi,
I am referring to the last kernel update for CentOS 5
http://lists.centos.org/pipermail/centos-announce/2012-April/018578.html

Upstream details tell me that if I dont want to reboot into the new
kernel I could blacklist the xfrm6_tunnel module.

How do I test that the blacklist of a module works?
-- 
Kind Regards, Markus Falb

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 307 bytes
Desc: OpenPGP digital signature
URL:
<http://lists.centos.org/pipermail/centos/attachments/20120420/b0a2a7fd/attachment-0002.sig>

Markus Falb wrote:
> Hi,
> I am referring to the last kernel update for CentOS 5
> http://lists.centos.org/pipermail/centos-announce/2012-April/018578.html
>
> Upstream details tell me that if I dont want to reboot into the new
> kernel I could blacklist the xfrm6_tunnel module.
>
> How do I test that the blacklist of a module works?
Why not just edit the default in /boot/grub/grub.conf?

    mark