[  563.471847] netdevsim netdevsim437 eni437np1: renamed from eth0
[  563.569583] netdevsim netdevsim515 eni515np1: renamed from eth1
[  563.821909] Could not find device with ifindex 2000 in netnsfd 11
[  563.822125] Could not find netns with fd: 2000
[  563.822224] Cannot link a netdevsim to itself
[  563.822329] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).