how do you bring IPv6 live without reboot?

[George Michaelson]

on a 6-STABLE host, I added:

ipv6_enable="YES"              
ipv6_network_interfaces="bge1"

to rc.conf, and ran /etc/rc.d/network_ipv6

this did not bring IPv6 live. rtsol reported problems with get_llflag()
calls. However across reboot, the system came up with IPv6 fine.

Can somebody explain why this won't work if run after the init sequence
has run to completion? What is the sequence of commands that when run
on an active FreeBSD system causes it to successfully bind to IPv6?

-George