[  521.231753] netdevsim netdevsim439 eni439np1: renamed from eth0
[  521.327663] netdevsim netdevsim694 eni694np1: renamed from eth1
[  521.589992] Could not find device with ifindex 2000 in netnsfd 11
[  521.590168] Could not find netns with fd: 2000
[  521.590249] Cannot link a netdevsim to itself
[  521.590345] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).