The stf(4) interface does proper filtering on the incoming 6to4 packets,
but checking the destination address avoids it to work behind a NAT.
For those of us with a modem/router not capable enough to support IPv6
but capable to redirect protocol 41 traffic (or maybe just all of it) to
a NAT-ed FreeBSD box, this patch means easy and working access to IPv6
world; ok, I'm absent-minded, but I already compiled a kernel forgetting
to re-apply the patch three times in a row ;-)
Fix: This is ume's patch as in Message-ID: <email@example.com>,
applied on latest 6-STABLE.
Has been working perfectly for me in the past year and some more
(tracking 6-STABLE on both i386 and amd64).
ping6(8) some IPv6 website, watch the ping packets go (and correctly
reach destination) and never see the answer.
Over to maintainer(s).
For bugs matching the following criteria:
Status: In Progress Changed: (is less than) 2014-06-01
Reset to default assignee and clear in-progress tags.
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