[  489.255559] netdevsim netdevsim257 eni257np1: renamed from eth0
[  489.356882] netdevsim netdevsim539 eni539np1: renamed from eth1
[  489.702140] Could not find device with ifindex 2000 in netnsfd 11
[  489.702313] Could not find netns with fd: 2000
[  489.702410] Cannot link a netdevsim to itself
[  489.702534] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).