[  527.200316] netdevsim netdevsim481 eni481np1: renamed from eth0
[  527.297466] netdevsim netdevsim621 eni621np1: renamed from eth1
[  527.548114] Could not find device with ifindex 2000 in netnsfd 11
[  527.548385] Could not find netns with fd: 2000
[  527.548508] Cannot link a netdevsim to itself
[  527.548650] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).