[  522.753788] netdevsim netdevsim509 eni509np1: renamed from eth0
[  522.851307] netdevsim netdevsim696 eni696np1: renamed from eth1
[  523.065225] Could not find device with ifindex 2000 in netnsfd 11
[  523.065454] Could not find netns with fd: 2000
[  523.065553] Cannot link a netdevsim to itself
[  523.065657] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).