Dropped packets in router logs

[Krumpinator]

i have a asus rt ac 66u and i constantly have my logs fill up with these, how do i fix? i had tech come out and that did nothing.

here is a pic showing https://gyazo.com/6ebc8945a85f21ac528c5c710fd65a5b

 

[bill001g]

It depends what that mac address is. There is more information that you cut off on those lines. Many times you see junk being sent to multicast addresses if the source is a internal IP. Many times you also see this for garbage traffic coming in from the internet that the router is discarding. It would have your wan ip as the destination ip and the source will be random ip on the internet.

 

[Krumpinator]

So what should I look for in the logs? I see the Mac but not sure what that is to, and same for the ip

 

[bill001g]

I would in general just ignore it. The router is doing its job if the traffic is garbage coming from the internet. Otherwise it is traffic that is coming from a internal machine that the router does not know where to send.

There is no magic simple answer to these you have to dig around and find out what the ip addresses really are if you want to know. If it is not affecting your performance it likely is not worth the effort to even look at it. There is not much you can do in a lot of cases even if you know why it is being dropped.