Is accept_rtadv enabled by default?

[Hiroki Sato]

Thomas <freebsdlists at bsdunix.ch> wrote
  in <4DDB6D8A.1090803 at bsdunix.ch>:

fr> Hello
fr>
fr> Out of pure curiosity. Why is accept_rtadv enabled by default on a
fr> interface with ipv6? I did not define accept_rtadv in rc.conf nor is it
fr> enabled via sysctl. net.inet6.ip6.accept_rtadv is set to 0 (default)

 An interface on FreeBSD 8.x accepts RAs only when
 net.inet6.ip6.accept_rtadv=1 *and* ACCEPT_RTADV is enabled at the
 same time.

 This has been the default behavior regarding RAs for a long time.  A
 new thing on 8.x is that the interface option ACCEPT_RTADV is exposed
 in the ifconfig output.  This flag was actually enabled by default
 prior to 8.x, too.

-- Hiroki
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