I installed a PCIe 1Gbps network card and configured it as a private network.  The PC (ds-proto-daq) is
192.168.1.1.  I guess we can make the chronobox 192.168.1.2.

[root@ds-proto-daq ~]# ifconfig enp5s0
enp5s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.1.1  netmask 255.255.255.0  broadcast 192.168.1.255
        inet6 fe80::bb27:5db:f778:d584  prefixlen 64  scopeid 0x20<link>
        ether 68:05:ca:8e:66:5c  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 27  bytes 4145 (4.0 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 17  memory 0xf72c0000-f72e0000