[  521.553676] netdevsim netdevsim503 eni503np1: renamed from eth0
[  521.652057] netdevsim netdevsim675 eni675np1: renamed from eth1
[  521.899962] Could not find device with ifindex 2000 in netnsfd 11
[  521.900207] Could not find netns with fd: 2000
[  521.900331] Cannot link a netdevsim to itself
[  521.900466] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).