for ipv4 in 0 1; do
    for ipv6 in 0 1; do
        for board in native samr21-xpro; do
            for app in lwip_sock_ip lwip_sock_tcp lwip_sock_udp; do
                if [ $ipv4 == 0 ] && [ $ipv6 == 0 ]; then
                    continue;
                fi;
                BOARD=$board LWIP_IPV4=$ipv4 LWIP_IPV6=$ipv6 make -C tests/pkg/${app} -j flash test
            done;
        done;
    done;
done