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doc: document that changing bgp distance needs a hard clear of routes

Paul Jakma 2 years ago
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      doc/bgpd.texi

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doc/bgpd.texi

@@ -104,6 +104,8 @@ so @code{router-id} is set to 0.0.0.0.  So please set router-id by hand.
 @deffn {BGP} {distance bgp <1-255> <1-255> <1-255>} {}
 This command change distance value of BGP.  Each argument is distance
 value for external routes, internal routes and local routes.
+
+To have this command applied to existing routes requires a hard clear.
 @end deffn
 
 @deffn {BGP} {distance <1-255> @var{A.B.C.D/M}} {}