From 656137db84cc3601ac51aded4a49a7096d617b78 Mon Sep 17 00:00:00 2001 From: bms Date: Thu, 4 Nov 2004 02:15:03 +0000 Subject: Document the fact that blackhole routes normally need to be bound to lo(4) interfaces to have an effect, and that this is not needed when using IP fast forwarding. Sponsored by: eXtensible Open Router Project MFC after: 3 weeks --- sbin/route/route.8 | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'sbin/route') diff --git a/sbin/route/route.8 b/sbin/route/route.8 index 30b807c..a47cbe0 100644 --- a/sbin/route/route.8 +++ b/sbin/route/route.8 @@ -412,3 +412,13 @@ utility appeared in The first paragraph may have slightly exaggerated .Xr routed 8 Ns 's abilities. +.Pp +Currently, routes with the +.Dv RTF_BLACKHOLE +flag set need to have the gateway set to an instance of the +.Xr lo 4 +driver, using the +.Fl iface +option, for the flag to have any effect; unless IP fast forwarding +is enabled, in which case the meaning of the flag will always +be honored. -- cgit v1.1