Invalid IP Packet?
I have Gigabit internet connected through NVG599. I have recently connected the Ring Alarm system to the router, directly via ethernet into LAN-2.
Everything is fine, except for one very unusual problem. Sometimes, at completely random intervals, the alarm system goes offline. It reconnects within 1 minute. Sometimes, it might go 2-3 days without this problem. And sometimes, it occurs at precisely the EXACT same time everyday, around 11:30PM.
I looked at the Firewall Logs on the router, and noticed that the IP associated with LAN-2, is displaying "Invalid IP Packet":
|2019-03-12T21:20:28-05:00||192.168.1.XXX||104.1X.XX.XX||TCP||Invalid IP Packet|
The System Logs show the following:
2019-03-12T21:06:29-05:00 L3 sdb: ELAN: Port lan-2 (eth1) is DOWN 2019-03-12T21:06:38-05:00 L3 sdb: ELAN: Port lan-2 is UP. (eth1) speed 100 duplex full
Could someone explain to me what exactly I need to do to fix this?
Unfortunately, it seems that this is localized to AT&T's internet, since other people who use Ring Alarm with other ISPs, don't seem to have this problem.
I would honestly appreciate any help. This has become really irritating.