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doc: explain rpf lookup default mode

Reported-by: Alexis Rosen <quagga-users@alexis.users.panix.com>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
David Lamparter 4 years ago
parent
commit
b162ab753e
1 changed files with 5 additions and 0 deletions
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      doc/main.texi

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doc/main.texi

@@ -224,6 +224,11 @@ with the longer prefix length is used;  if they're equal, the
 Multicast RIB takes precedence.
 @end table
 
+The @code{mrib-then-urib} setting is the default behavior if nothing is
+configured.  If this is the desired behavior, it should be explicitly
+configured to make the configuration immune against possible changes in
+what the default behavior is.
+
 WARNING: Unreachable routes do not receive special treatment and do not
 cause fallback to a second lookup.
 @end deffn