[  500.356433] netdevsim netdevsim553 eni553np1: renamed from eth1
[  500.456765] netdevsim netdevsim345 eni345np1: renamed from eth0
[  500.795571] Could not find device with ifindex 2000 in netnsfd 11
[  500.795721] Could not find netns with fd: 2000
[  500.795796] Cannot link a netdevsim to itself
[  500.795896] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).