[  519.911236] netdevsim netdevsim551 eni551np1: renamed from eth1
[  520.009194] netdevsim netdevsim457 eni457np1: renamed from eth0
[  520.241353] Could not find device with ifindex 2000 in netnsfd 11
[  520.241557] Could not find netns with fd: 2000
[  520.241640] Cannot link a netdevsim to itself
[  520.241738] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).