# fib saddr . iif oif ne 0 ip test-ip prerouting [ fib saddr . iif oif => reg 1 ] [ cmp neq reg 1 0x00000000 ] # fib saddr . iif oifname "lo" ip test-ip prerouting [ fib saddr . iif oifname => reg 1 ] [ cmp eq reg 1 0x00006f6c 0x00000000 0x00000000 0x00000000 ] # fib daddr . iif type local ip test-ip prerouting [ fib daddr . iif type => reg 1 ] [ cmp eq reg 1 0x00000002 ] # fib daddr . iif type vmap { blackhole : drop, prohibit : drop, unicast : accept } __map%d test-ip b __map%d test-ip 0 element 00000006 : 0 [end] element 00000008 : 0 [end] element 00000001 : 0 [end] ip test-ip prerouting [ fib daddr . iif type => reg 1 ] [ lookup reg 1 set __map%d dreg 0 ] # fib daddr oif exists ip test-ip prerouting [ fib daddr oif present => reg 1 ] [ cmp eq reg 1 0x00000001 ] # fib daddr oif missing ip test-ip prerouting [ fib daddr oif present => reg 1 ] [ cmp eq reg 1 0x00000000 ]