K 10
svn:author
V 3
hrs
K 8
svn:date
V 27
2011-06-05T11:20:19.421478Z
K 7
svn:log
V 446
Specify requirements for RA sending/receiving based on lifetime,
IFF_ND6_ACCEPT_RTADV, and net.inet6.ip6.forwarding.

 ra_output:
  (lifetime == 0) = output
  (lifetime != 0 && (ACCEPT_RTADV || !ip6.forwarding) = no output

 ra_input:
  ACCEPT_RTADV = input
  !ACCEPT_RTADV = no input

Note that the current implementation sends RAs with zero-lifetime even if
ip6.forwarding == 0.  This behavior is derived from KAME and different from
RFC 4861.

END