route.8: remove now incorrect bug report about blackhole routes

We removed IP fast forwarding a while ago, so this is no longer relevant.
The netlink interface always sets the nexthop interface as V_loif, so users
don't need to worry about it either.

Reported by:	Jim Thompson
Reviewed by:	melifaro
Sponsored by:	Rubicon Communications, LLC ("Netgate")
Differential Revision:	https://reviews.freebsd.org/D47528

sbin/route/route.8

@@ -25,7 +25,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd June 16, 2023
+.Dd November 12, 2024
 .Dt ROUTE 8
 .Os
 .Sh NAME
@@ -552,17 +552,3 @@ The
 .Nm
 utility appeared in
 .Bx 4.2 .
-.Sh BUGS
-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.