[  541.658600] netdevsim netdevsim456 eni456np1: renamed from eth0
[  541.759534] netdevsim netdevsim525 eni525np1: renamed from eth1
[  542.138526] Could not find device with ifindex 2000 in netnsfd 11
[  542.138687] Could not find netns with fd: 2000
[  542.138780] Cannot link a netdevsim to itself
[  542.138897] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).