[Bug 292807] IPv6 loopback ::1 cannot respond to requests sourced from another interface address

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Newsgroups gmane.os.freebsd.devel.net
Message-ID <[email protected]/bugzilla/>
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=292807

--- Comment #3 from Andrey V. Elsukov <[email protected]> ---
The IPv6 loopback address belongs to link-local scope zone. This means a packet
with IPv6 loopback address as source address can not leave this scope zone.
Thus network stack fails to send such IP datagram. And "badscope" error counter
will grow when this occurs.
You can check `netstat -sp ip6 | grep "violated scope"`. 
I think this is expected behavior and it isn't bug.

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