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Re: Conectivity loss because gateway's arp entry is incomplete



Στις 2020-03-04 01:54, Miguel A. Vallejo έγραψε:

Nektarios Katakis wrote:
I would check the `dmesg` command output. If there are erros there then 
they re coming from the kernel.


I forgot to mention not a single message in syslog, kern.log, or any
other log I could find. Nothing. Nada. Zero.


Have you made sure that the wifi is not the problem? Before going into
wild software investigation?


No, that's what I want to discover to fill an appropriate bug report
against the right component. I must admit MT7612u support is buggy as
hell. I suffer many other bugs with these devices, all of them related
to the inhability to follow AP frequency changes in the 5 GHz band,
but this one does not seems related to the wifi itself. When the bug
triggers I can send and receive packets. Only sending arp messages
seems to be missing.


For example have you tried in a Windows
laptop with the correct device drivers? Because you even might not be
using the correct device drivers!


I can't test the devices in Windows because I have no Windows here,


I dont use windows either. But most manufacturers give correct drivers
for them.


but I have four dongles, from two different manufacturers, all of them
with the MT7612U chip in it and all of them load the mt76x2u module
when plugged, so I must conclude they are using the correct device
driver/module. The problem exists with all the four dongles.


This is not necessarily true. I recently bought a (chinese) wifi
adapter (atheros chip) that was recognized as mediatek. The moment
I linked the correct drivers with the device it worked properly.
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