On 21 November 2012 22:39, Garrett Cooper <yaneg...@gmail.com> wrote: > While going through the tree trying to document all of our > net.inet6 sysctls, I noticed that net.inet6.ip6.rr_prune is defined, > but not actually used anywhere in the stack: > > netinet6/ip6_var.h:VNET_DECLARE(int, ip6_rr_prune); /* router > renumbering prefix > netinet6/ip6_var.h:#define V_ip6_rr_prune > VNET(ip6_rr_prune) > netinet6/in6_proto.c:VNET_DEFINE(int, ip6_rr_prune) = 5; /* router > renumbering prefix > netinet6/in6_proto.c:SYSCTL_VNET_INT(_net_inet6_ip6, IPV6CTL_RR_PRUNE, > rr_prune, CTLFLAG_RW, > netinet6/in6_proto.c: &VNET_NAME(ip6_rr_prune), 0, > > The knob was declared in r181803 and shuffled around a few times, > but isn't in use anywhere (either then or now). > Should I send out a PR to remove it (or am I missing some context)?
I believe this knob became unused with invalidation of the prefix manipulation mechanism (including prefix or router renumbering, rfc2894) at KAME about 11 years ago. It was intended to schedule in6_rr_timer() callout every ip6_rr_prune seconds to check for expired prefixes and delete the associated addresses from interface. Last bits of old ipv6 prefix management stuff cleaned up in r231229. -- wbr, pluknet _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscr...@freebsd.org"
