[  521.072916] netdevsim netdevsim449 eni449np1: renamed from eth0
[  521.170053] netdevsim netdevsim568 eni568np1: renamed from eth1
[  521.403960] Could not find device with ifindex 2000 in netnsfd 11
[  521.404197] Could not find netns with fd: 2000
[  521.404294] Cannot link a netdevsim to itself
[  521.404420] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).