[  521.312676] netdevsim netdevsim516 eni516np1: renamed from eth1
[  521.411114] netdevsim netdevsim481 eni481np1: renamed from eth0
[  521.621367] Could not find device with ifindex 2000 in netnsfd 11
[  521.621569] Could not find netns with fd: 2000
[  521.621673] Cannot link a netdevsim to itself
[  521.621796] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).