[  477.397026] netdevsim netdevsim451 eni451np1: renamed from eth0
[  477.498397] netdevsim netdevsim616 eni616np1: renamed from eth1
[  477.832554] Could not find device with ifindex 2000 in netnsfd 11
[  477.832702] Could not find netns with fd: 2000
[  477.832777] Cannot link a netdevsim to itself
[  477.832867] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).