[FS#1403] latest mediatek-patches for second gmac not fully working

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Frank Wunderlich (frank-w) 

Attached to Project - OpenWrt/LEDE Project
Summary - latest mediatek-patches for second gmac not fully working
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Low
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - Supply the following if possible:
 - Device problem occurs on bananapi-r2

https://github.com/openwrt/openwrt/tree/master/target/linux/mediatek/patches-4.14

Some of these patches are creating the second gmac (ethernet-lane between soc and switch).
 
 - Steps to reproduce

i have applied all Patches to a native 4.14(.11/20)-Kernel-Source.
It compiles fine, looks good (ip a in system), but i get no response to icmp, 
outgoing seems to work, but ip-header gets damaged (tcpdump on remote host reports "truncated-ip - 6 bytes missing!"). Maybe because of that that my remote-host sends no icmp echo reply...
 
See http://forum.banana-pi.org/t/adding-second-gmac-to-4-14/4709/17 for detailed test

Can you confirm that and/or place this to the author of the patches?


More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=1403