misc/162547: rtadvd not working, reporting non-zero lifetime RA on RA receiving interface

[Matthew Lager]

>Number:         162547
>Category:       misc
>Synopsis:       rtadvd not working, reporting non-zero lifetime RA on RA receiving interface
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Nov 14 01:40:07 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Matthew Lager
>Release:        9.0-RC1
>Organization:
SDUNIX
>Environment:
FreeBSD g03.rpsol.net 9.0-RC1 FreeBSD 9.0-RC1 #0: Tue Oct 18 18:30:38 UTC 2011     root at obrian.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
In FreeBSD 8.2-RELEASE, rtadvd is working properly, and clients are receiving IPv6 addresses. When trying the same configuration in 9.0-RC1, rtadvd reports:

Nov 13 18:19:31 g03 rtadvd[2818]: non-zero lifetime RA on RA receiving interface re1.  Ignored.

At this point, rtadvd fails to advertise IPv6 addresses to clients. After reading the man page, it looked like passing the -s flag to rtadvd would suppress this behavior, but that had no effect.

To test, I commented out the block of code in /usr/src/usr.sbin/rtadvd/rtadvd.c that handled this, recompiled and installed, and rtadvd works as it did in FreeBSD 8.2-RELEASE.
>How-To-Repeat:
Enable rtadvd using the following flags in rc.conf:

rtadvd_enable="YES"
rtadvd_interfaces="re1"
>Fix:
Lines 1701 through 1724 were commented out in /usr/src/usr.sbin/rtadvd/rtadvd.c. rtadvd was recompiled and installed, then started, which resumed operation as it existed in 8.2-RELEASE.

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