Hi,
That's expected behaviour. Traditional Net Scans works like this:
1) Ping host
2) Check if host exist in ARP table.
3) Whatever exists in ARP table we consider it as "online".
That way we can detect hosts that they forbid us to ping them. So in your case you get your device as "online" because it's entry is in the ARP table from the previous scan.
A nice solution would be to "reset" the ARP table each time but access to that API is limited so we can do anything about it.
Hi, That's expected behaviour. Traditional Net Scans works like this: 1) Ping host 2) Check if host exist in ARP table. 3) Whatever exists in ARP table we consider it as "online". That way we can detect hosts that they forbid us to ping them. So in your case you get your device as "online" because it's entry is in the ARP table from the previous scan. A nice solution would be to "reset" the ARP table each time but access to that API is limited so we can do anything about it.