kern/188032: IPv6 on lo never leaves 'tentative' state if configured with prefixlen 128

[Andrey V. Elsukov]

The following reply was made to PR kern/188032; it has been noted by GNATS.

From: "Andrey V. Elsukov" <bu7cher at yandex.ru>
To: Darren Baginski <kickbsd at yandex.ru>, 
 "freebsd-gnats-submit at FreeBSD.org" <freebsd-gnats-submit at freebsd.org>
Cc:  
Subject: Re: kern/188032: IPv6 on lo never leaves 'tentative' state if configured
 with prefixlen 128
Date: Thu, 03 Apr 2014 12:46:55 +0400

 On 03.04.2014 05:08, Darren Baginski wrote:
 >> Hello,
 >>
 >> Actually the problem is in your configuration. As you may see, you have
 >> IFDISABLED flag set. When you are configuring /127 prefix, the system
 >> does install route on that prefix and automatically clears IFDISABLED
 >> flag. When you are configuring /128 prefix, the system won't install
 >> route and thus IFDISABLED flag still here. With IFDISABLED flag the
 >> system won't do DAD and  tentative flag will never cleared.
 >>
 >> --
 >> WBR, Andrey V. Elsukov
 > 
 > I'm not setting IFDISABLED flag as you see from output below.
 > Moreover the same set of commands doesn't dot put interface into IFDISABLED sate on FreeBSD 7.x, 8.x, 9.x
 > Again, if I set IPv4 /32 it works as well. 
 > Thus this /128 case is a clear regression.
 
 All interfaces have IFDISABLED flag if you have not configured IPv6 for
 them.
 
 -- 
 WBR, Andrey V. Elsukov