# dup to "lo" netdev test-netdev ingress [ immediate reg 1 0x00000001 ] [ dup sreg_dev 1 ] # dup to mark map { 0x00000001 : "lo", 0x00000002 : "lo"} __map%d test-netdev b __map%d test-netdev 0 element 00000001 : 00000001 0 [end] element 00000002 : 00000001 0 [end] netdev test-netdev ingress [ meta load mark => reg 1 ] [ lookup reg 1 set __map%d dreg 1 ] [ dup sreg_dev 1 ]