/* -*- P4_16 -*- */
#ifndef DEPARSERS_P4
#define DEPARSERS_P4
    apply {
        /* always */
        packet.emit(hdr.ethernet);

        /* only if information is sent to the controller */
        packet.emit(hdr.cpu);

        /* either */
        packet.emit(hdr.ipv4);
        packet.emit(hdr.ipv6);
        packet.emit(hdr.arp);

        /* either */
        packet.emit(hdr.tcp);
        packet.emit(hdr.udp);
        packet.emit(hdr.icmp);

        /* might be more than one subtype */
        packet.emit(hdr.icmp6);
        packet.emit(hdr.icmp6_na_ns);
        packet.emit(hdr.icmp6_option_link_layer_addr);

    }
#endif