Correct. Mandrake 10.1 comes with IPv6 enabled by default.

Add the following lines to the indicated files:

/etc/sysconfig/network, add: „NETWORKING_IPV6=no“
/etc/modprobe.conf, add: „alias net-pf-10 off“
/etc/modules.conf, add: „alias net-pf-10 off“

unless you need IPv6. If you do, then you’ll have to ignore those ‚FORMERR‘
and ‚SERVFAIL‘ messages.

[compton ~]$ grep IPv6 HOWTOs
-rw-rw-r– 1 gferg ldp 334603 Jan 12 09:28 Linux+IPv6-HOWTO
-rw-rw-r– 1 gferg ldp 81396 Apr 20 2004 Mobile-IPv6-HOWTO
-rw-rw-r– 1 gferg ldp 53895 Apr 23 2004 OLSR-IPv6-HOWTO
[compton ~]$

http://www.groupsrv.com/linux/about49234.html