[  455.250061] netdevsim netdevsim615 eni615np1: renamed from eth1
[  455.250319] netdevsim netdevsim281 eni281np1: renamed from eth0
[  455.333462] Could not find device with ifindex 2000 in netnsfd 11
[  455.333561] Could not find netns with fd: 2000
[  455.333620] Cannot link a netdevsim to itself
[  455.333675] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).