HT4667 I need to disable IPv6 in Mavericks.

When I try to disable IPv6 in Network Systems Preferences under Advanced, TCP/IP the only options I am presented with are "Automatic", "Manually", and "Link-local only".  Shouldn't there be an option "Off" also?  Is there some other way to turn off IPv6 in Mavericks?

HI Carpil,
to continue the same discussion i  found following things on my Mavericks,
$ networksetup -listallnetworkservices
An asterisk (*) denotes that a network service is disabled.
Ethernet Adaptor (en3)
Wi-Fi
Bluetooth PAN
Thunderbolt Bridge
Ethernet Adaptor (en1)
Bluetooth DUN
$ networksetup -setv6off "Thunderbolt Bridge"
$ networksetup -setv6off "Bluetooth DUN"
$ networksetup -setv6off "Ethernet Adaptor (en1)"
$ networksetup -setv6off "Ethernet Adaptor (en3)"
$ networksetup -setv6off "Bluetooth PAN"
$ networksetup -setv6off "WI-Fi"
$ networksetup -listallnetworkservices
An asterisk (*) denotes that a network service is disabled.
Ethernet Adaptor (en3)
Wi-Fi
Bluetooth PAN
Thunderbolt Bridge
Ethernet Adaptor (en1)
Bluetooth DUN
why it is not switching it off
and also i can see ipv6 address ::1 and fe80:1::1 being present
and also when i run $ netstat -i ipv6 -gps
Name  Mtu   Network       Address            Ipkts Ierrs    Opkts Oerrs  Coll
lo0   16384 <Link#1>                          1155     0     1155     0     0
lo0   16384 localhost   ::1                   1155     -     1155     -     -
lo0   16384 127           localhost           1155     -     1155     -     -
lo0   16384 nikhils-mac fe80:1::1             1155     -     1155     -     -
so I Was curious how to disable it, and why this command not executing after i give admin user password.

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    Hi,
    Based on your description, it seems to be the same as the following blog.
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