misc/113842: enabling IPv6 post-boot didn't work: required reboot

[George Michaelson]

>Number:         113842
>Category:       misc
>Synopsis:       enabling IPv6 post-boot didn't work: required reboot
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue Jun 19 03:40:01 GMT 2007
>Closed-Date:
>Last-Modified:
>Originator:     George Michaelson
>Release:        FreeBSD 7.0-CURRENT i386
>Organization:
>Environment:
System: FreeBSD mirin.apnic.net 7.0-CURRENT FreeBSD 7.0-CURRENT #5: Mon Jun 11 10:43:34 EST 2007 root at mirin.apnic.net:/usr/obj/usr/src/sys/ULURU i386


	
>Description:
	I had to bring up a stateless autoconfig node, which previous
	was V4 only. It had V6 in the kernel. I wanted to avoid reboot.

	Although I added V6 enabler directives to /etc/rc.conf, running
	the /etc/rc.d/ scripts did not seem to work. rtsol did not work,
	yet across a reboot, I came back with V6. go figure.

	so what IS the sequence which can re-initialize interfaces and
	sysctl kernel state, to bring V6 live?
	
>How-To-Repeat:
	boot V4 only machine. add V6 enablers to rc.conf. try and
	bring it live runtime, without a static V6 assignment.

	
>Fix:

	better documentation of a sequence of commands which DTRT with
	the interfaces, without disrupting existing V4 state.
	
	just because it works across reboot doesn't mean its not broken!
	


>Release-Note:
>Audit-Trail:
>Unformatted: