[  474.211137] netdevsim netdevsim509 eni509np1: renamed from eth0
[  474.212399] netdevsim netdevsim602 eni602np1: renamed from eth0
[  474.291500] Could not find device with ifindex 2000 in netnsfd 11
[  474.291599] Could not find netns with fd: 2000
[  474.291653] Cannot link a netdevsim to itself
[  474.291708] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).