|I'm not sure what you mean by a "watch" but if the interface is misbehaving, the simplest way to ascertain if it's a bad one or not is to try another network interface you know is working.|
If this one is an onboard (ie: nailed to the motherboard) then disable it in the BIOS and stick a NIC in an expansion slot and see what happens. If the replacment doesn't do it, then the other interface was bad.......leave things as they are.
If the behavior continues, you've ruled out the NIC and now know it's a softare, driver, or TCP/IP stack issue.
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.