[  483.126010] netdevsim netdevsim520 eni520np1: renamed from eth1
[  483.226029] netdevsim netdevsim265 eni265np1: renamed from eth0
[  483.573815] Could not find device with ifindex 2000 in netnsfd 11
[  483.573976] Could not find netns with fd: 2000
[  483.574071] Cannot link a netdevsim to itself
[  483.574193] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).