citakis:

Supply the following if possible:

• Device problem occurs on
• Software versions of OpenWrt/LEDE release, packages, etc.
• Steps to reproduce

I have "Openwrt 18.06.1 r7258-5eb055306f" installed on a "raspberry pi 1 model B" and for wan interface I have a TP-link UE200 USB-to-ethernet adapter. I have installed the kmod-usb-net-cdc-ether in order to make the adapter work and I have not detected anything suspicious for the last 13 days of uptime but my kernel log is filling with the error messages shown in the next lines
cdc_ether 1-1.2:2.0 eth1: kevent 11 may have been dropped
cdc_ether 1-1.2:2.0 eth1: kevent 12 may have been dropped

my kernel log so far is [[this|https://pastebin.com/rJVTZQ0S]]
As you can see the in 13 days uptime it happened 7 times and wan connection stayed down for 60 seconds.

lsusb output is
root@LEDE:~# lsusb
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp. SMC9512/9514 USB Hub