zebra: add "show ip rpf" to get result of RPF lookup

Checking what route exactly a RPF lookup for a given source uses is
essential for an administrator to debug multicast routing issues.  This
command provides exactly that, using the multicst RPF lookup function
and printing out its result to the CLI.

Cc: Everton Marques <everton.marques@gmail.com>
Cc: Balaji G <balajig81@gmail.com>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
1 file changed