Raspberry Pi 4b + bookwarm + 7i76E ethernet connection problem

Hi Guys,
I have problem with configuration connection between raspberry pi 4b and mesa card's 7i76e.
I downloaded official LinuxCNC 2.9.2 "Raspberry Pi 4 OS based on Debian Bookworm" from linuxcnc.org/downloads/ , and after installation is version 2.9.1 (?).
First trying, I used standard setting jumper w3 (up), ip: 192.168.1.121 and I add contents to file /etc/network/interfaces:
auto eth0
iface eth0 inet static
address 192.168.1.1
netmask 255.255.255.0
hardware-irq-coalesce-rx-usecs 0

but every time I have problem with ping 7i76e.
Configuration ifconfig -a showed inet6 , so I was thinking about problem with active ipv6. Next I tried disable ipv6, but after reboot ipv6 was active. (ipv6 is enabled by kernel). So - I added ipv6 to kernel blacklist. All the time i cant pinging mesa card. I change setting for ip 10.10.10.10, jumper, and the same situation. I use two ethernet cable, with configuration:
1-3   and   1-3
2-6             2-6
3-1             3-1
4-4             4-7
5-5             5-8
6-2             6-2
7-7             7-4
8-8             8-5
When I ping 7i76e 4 green leds are flashing with 1Hz frequency with binary code, but is mistake connection.
I used many different configuration, but every time is the same effect.
I havent more ideas. Tomorrow I try used fresh system again...
Somebody has any idea?

Bartek

I think you are chasing the wrong thing. ip6 has nothing to do with it
In this video about 16 minutes in, I explain networking and how to set this up with a mesa card

Rodw
Thank You for Your video, I saw him and one more with configuration network, but in this distribution isnt grafical network manager. Tomorrow I try again start with fresh system, but I need suggestion, what i wrong do.
In Your movie, after powered card, all the time four green leds flashing. In my card after powered green leds dont flashing.

Tommylight
I havn't idea, why i was thinking, that i need "crossover" cable. If problem is in "straight" cable, that isnt problem
I set mesa to 10.10.10.10, and rpi to 10.10.10.1, 10.10.10.2, 10.10.10.11, 10.10.10.100, many times, but I dont tried change cable for "straigth", ehhh..

I cant wait check it tomorrow,

Bartek
 

If the green user LEDS on the 7I76E count up, the 7I76E is receiving packets
What error do you get from ping?

you don't need a cross over cable.