Ethercat installation from repositories - how to step by step

linuxcnc@linuxcnc:~$ sudo apt install linuxcnc-ethercat
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following packages were automatically installed and are no longer required:
  linux-headers-6.1.0-23-amd64 linux-headers-6.1.0-23-common
Use 'sudo apt autoremove' to remove them.
The following additional packages will be installed:
  autoconf autoconf-archive automake autotools-dev ethercat-dkms ethercat-master libethercat libltdl-dev libtool m4
Suggested packages:
  gnu-standards autoconf-doc libtool-doc gfortran | fortran95-compiler gcj-jdk m4-doc
The following NEW packages will be installed:
  autoconf autoconf-archive automake autotools-dev ethercat-dkms ethercat-master libethercat libltdl-dev libtool linuxcnc-ethercat m4
0 upgraded, 11 newly installed, 0 to remove and 0 not upgraded.
Need to get 2,415 kB/5,387 kB of archives.
After this operation, 86.6 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Ign:1 http://download.opensuse.org/repositories/science:/EtherLab/Debian_12 ./ ethercat-dkms 1.6.1.g419f621-1+8.3                                                                            
Ign:2 http://download.opensuse.org/repositories/science:/EtherLab/Debian_12 ./ ethercat-master 1.6.1.g419f621-1+8.3
Ign:3 http://opensuse.mirror.liquidtelecom.com/repositories/science%3A/EtherLab/Debian_12 ./ linuxcnc-ethercat 1.40.0.g8a607c0-0
Ign:1 http://download.opensuse.org/repositories/science:/EtherLab/Debian_12 ./ ethercat-dkms 1.6.1.g419f621-1+8.3
Ign:2 http://download.opensuse.org/repositories/science:/EtherLab/Debian_12 ./ ethercat-master 1.6.1.g419f621-1+8.3
Ign:3 http://opensuse.mirror.liquidtelecom.com/repositories/science%3A/EtherLab/Debian_12 ./ linuxcnc-ethercat 1.40.0.g8a607c0-0
Ign:1 http://download.opensuse.org/repositories/science:/EtherLab/Debian_12 ./ ethercat-dkms 1.6.1.g419f621-1+8.3
Ign:2 http://download.opensuse.org/repositories/science:/EtherLab/Debian_12 ./ ethercat-master 1.6.1.g419f621-1+8.3
Ign:3 http://opensuse.mirror.liquidtelecom.com/repositories/science%3A/EtherLab/Debian_12 ./ linuxcnc-ethercat 1.40.0.g8a607c0-0
Err:1 http://download.opensuse.org/repositories/science:/EtherLab/Debian_12 ./ ethercat-dkms 1.6.1.g419f621-1+8.3
  Could not connect to opensuse.mirror.liquidtelecom.com:80 (2c0f:fe40:8001:10::1). - connect (101: Network is unreachable) Could not connect to opensuse.mirror.liquidtelecom.com:80 (197.155.77.1), connection timed out
Err:2 http://download.opensuse.org/repositories/science:/EtherLab/Debian_12 ./ ethercat-master 1.6.1.g419f621-1+8.3
  Unable to connect to opensuse.mirror.liquidtelecom.com:http:
Err:3 http://opensuse.mirror.liquidtelecom.com/repositories/science%3A/EtherLab/Debian_12 ./ linuxcnc-ethercat 1.40.0.g8a607c0-0
  Unable to connect to opensuse.mirror.liquidtelecom.com:http:
E: Failed to fetch http://opensuse.mirror.liquidtelecom.com/repositories/science%3A/EtherLab/Debian_12/all/ethercat-dkms_1.6.1.g419f621-1%2B8.3_all.deb  Could not connect to opensuse.mirror.liquidtelecom.com:80 (2c0f:fe40:8001:10::1). - connect (101: Network is unreachable) Could not connect to opensuse.mirror.liquidtelecom.com:80 (197.155.77.1), connection timed out
E: Failed to fetch http://opensuse.mirror.liquidtelecom.com/repositories/science%3A/EtherLab/Debian_12/amd64/ethercat-master_1.6.1.g419f621-1%2B8.3_amd64.deb  Unable to connect to opensuse.mirror.liquidtelecom.com:http:
E: Failed to fetch http://opensuse.mirror.liquidtelecom.com/repositories/science%3A/EtherLab/Debian_12/amd64/linuxcnc-ethercat_1.40.0.g8a607c0-0_amd64.deb  Unable to connect to opensuse.mirror.liquidtelecom.com:http:
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?
linuxcnc@linuxcnc:~$ sudo apt install linuxcnc-ethercat
E: Conflicting values set for option Signed-By regarding source http://download.opensuse.org/repositories/science:/EtherLab/Debian_12/ ./: /etc/apt/trusted.gpg.d/science_EtherLab.gpg != /etc/apt/trusted.gpg.d/science_EtherLab.gpg.key.binary.gpg
E: The list of sources could not be read.

linuxcnc@linuxcnc:~$ wget -O - download.opensuse.org/repositories/scien...ebian_12/Release.key | sudo apt-key add -
--2024-09-17 19:36:19--  http://download.opensuse.org/repositories/scien...ebian_12/Release.key
Resolving download.opensuse.org (download.opensuse.org)... 195.135.223.226, 2a07:de40:b250:131:10:151:131:30
Connecting to download.opensuse.org (download.opensuse.org)|195.135.223.226|:80... Warning: apt-key is deprecated. Manage keyring files in trusted.gpg.d instead (see apt-key(8)).
connected.
HTTP request sent, awaiting response... 404 Not Found
2024-09-17 19:36:20 ERROR 404: Not Found.

gpg: no valid OpenPGP data found.
linuxcnc@linuxcnc:~$

linuxcnc@linuxcnc:~$ sudo apt update
E: Conflicting values set for option Signed-By regarding source http://download.opensuse.org/repositories/science:/EtherLab/Debian_12/ ./: /etc/apt/trusted.gpg.d/science_EtherLab.gpg != /etc/apt/trusted.gpg.d/science_EtherLab.gpg.key.binary.gpg
E: The list of sources could not be read.