In article [ref] (at Thu, 21 Feb 2008 12:08:42 +0200), Juha-Matti Tapio [off-list ref] says:

Skip the prefix length matching in source address selection for
orchid -> non-orchid addresses.

Overlay Routable Cryptographic Hash IDentifiers (RFC 4843,
2001:10::/28) are currenty not globally reachable. Without this
check a host with an ORCHID address can end up preferring those over
regular addresses when talking to other regular hosts in the 2001::/16
range thus breaking non-orchid connections.

Signed-off-by: Juha-Matti Tapio <redacted>

Is this really required?
I believe address labels (rule 6) should work, no?

--yoshfuji