[  516.249279] netdevsim netdevsim438 eni438np1: renamed from eth0
[  516.347056] netdevsim netdevsim646 eni646np1: renamed from eth1
[  516.544809] Could not find device with ifindex 2000 in netnsfd 11
[  516.544983] Could not find netns with fd: 2000
[  516.545055] Cannot link a netdevsim to itself
[  516.545141] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).