Re: kern/51301: 7.99.32 has broken IPv6 functionality of pkgsrc/net/openvpn

[Ryota Ozaki <ozaki-r%netbsd.org@localhost>]

The following reply was made to PR kern/51301; it has been noted by GNATS.

From: Ryota Ozaki <ozaki-r%netbsd.org@localhost>
To: Paul Goyette <paul%whooppee.com@localhost>
Cc: "gnats-bugs%NetBSD.org@localhost" <gnats-bugs%netbsd.org@localhost>
Subject: Re: kern/51301: 7.99.32 has broken IPv6 functionality of pkgsrc/net/openvpn
Date: Sat, 2 Jul 2016 23:00:50 +0900

 On Sat, Jul 2, 2016 at 10:37 PM, Ryota Ozaki <ozaki-r%netbsd.org@localhost> wrote:
 > On Sat, Jul 2, 2016 at 7:54 PM, Paul Goyette <paul%whooppee.com@localhost> wrote:
 >> Looking at the two outputs side-by-side, the only significant differences
 >> are:
 >>
 >> * The "L" flag is missing in the "after" output
 >
 > This is expected. Updating userland led the change.
 >
 >>
 >> * For 2605:2700:1:1043::1:2 in the "after" file, the interface is tun0
 >>   In the "before" file, that route has interface lo0
 >
 > So the diff should be important for the issue. Could you test
 > a kernel with only r1.198 of src/sys/netinet6/nd6.c reverted?
 > The change looks related to the issue.
 
 Oops. Only reverting the change doesn't work.
 I'll investigate more to know what's happening.
 
   ozaki-r
 
 >
 >>
 >> Also please note that the openvpn software apparently tries to add that
 >> ::1:2 route twice;  I get the following message in startup log
 >>
 >> route: writing to routing socket: File exists
 >> add net 2605:2700:1:1043::/120: gateway 2605:2700:1:1043::2: File exists
 >
 > I'm not sure if the behavior affects the kernel or not
 > (I guess not).
 >
 > Thanks,
 >   ozaki-r
 >
 >>
 >> But I also get this when everything works, and I even get it on NetBSD-6 so
 >> it may not be significant.
 >>
 >>
 >>
 >> +------------------+--------------------------+------------------------+
 >> | Paul Goyette     | PGP Key fingerprint:     | E-mail addresses:      |
 >> | (Retired)        | FA29 0E3B 35AF E8AE 6651 | paul at whooppee.com   |
 >> | Kernel Developer | 0786 F758 55DE 53BA 7731 | pgoyette at netbsd.org |
 >> +------------------+--------------------------+------------------------+