THIS IS A TEST INSTANCE. Feel free to ask and answer questions, but take care to avoid triggering too many notifications.

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Assuming that .2 is on the same subnet as .1 and .23, there should have been an ARP request for 192.168.1.2. If the device doesn't exist then there will not be an ARP response. If there is no entry for .2 in the ARP table then the ICMP request (ping) is not possible.