realtek: Traffic directly on lanX not working
hauke at hauke-m.de
Sun Jun 20 07:11:03 PDT 2021
On 6/20/21 11:01 AM, Birger Koblitz wrote:
> On 19.06.21 14:25, Hauke Mehrtens wrote:
>> I am unable to send and receive packets directly on the lan1 interface when it is not part of a bridge.
>> In wireshark on a connected host I do not see any packets from this device, but the link is up.
>> When I use OpenWrt's default network configuration using a bridge, network works like expected.
>> I took care of the VLAN 100 which is used by default, but this setup does not use any VLAN.
>> I would like to use a very similar configuration for the failsafe mode which is also not working correctly.
> This is the same finding tmon had:
> The reason is a hardware limitation on RTL chip families 8380-9300, they require a port to be a member of VLAN 1
> in order to send/receive traffic:
> I am not sure how to proceed. One solution is to set this up silently in the driver, but then the existence of
> vlan 1 would be intransparent to the user, a possible security risk.
Thank you for the links, I was not aware of this strange problem.
Do you have access to a documentation of any of these chips or only some
We could add some special handling for these chips in the failsafe mode,
let me look into this.
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