[  510.879502] netdevsim netdevsim509 eni509np1: renamed from eth0
[  510.977498] netdevsim netdevsim663 eni663np1: renamed from eth1
[  511.194288] Could not find device with ifindex 2000 in netnsfd 11
[  511.194476] Could not find netns with fd: 2000
[  511.194555] Cannot link a netdevsim to itself
[  511.194642] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).