the network always crashed in nanopi m4

Here I found a bug in Nanopi M4.

When I download BitTorrent file through ipv6(use Transmission,qbittorent...),the network will crashed.

And I even can't ping it successful.

When I connect it in local.I don't see any log in the network service.

And when I replace the network card(1000Mb) with a usb network card.

The network work very good.And didn't appear any problem.

I have try all the linux system include the office system.

the problem happen again.

So I only can use the usb network card or wifi.

Does anyone who know how to solve the problem???

I would be very grateful for it.

I noticed a same problem in firely board.

if it is the same problem??

http://dev.t-firefly.com/thread-11741-2-1.html

and he change the kernel in this way:

 &gmac {

         phy-supply = <&vcc_phy>;

         phy-mode = "rgmii";

         clock_in_out = "input";

         snps,reset-gpio = <&gpio3 15 GPIO_ACTIVE_LOW>;

         snps,reset-active-low;

         snps,reset-delays-us = <0 10000 50000>;

         assigned-clocks = <&cru SCLK_RMII_SRC>;

         assigned-clock-parents = <&clkin_gmac>;

         pinctrl-names = "default";

         pinctrl-0 = <&rgmii_pins>;

         tx_delay = <0x28>;

 -       rx_delay = <0x11>;

+       rx_delay = <0x1B>;

         status = "okay";

 };

I don't know if it work.

And I didn't know how to change it in the kernel files.

I am poor in this work.

I also find that the nanopi m4 use the st_gmac driver for eth0 1000m.

And I'm sure it has some bug.

When I use the usb card drvier for usb card.Every thing work good.