[  454.960059] netdevsim netdevsim286 eni286np1: renamed from eth0
[  454.962104] netdevsim netdevsim621 eni621np1: renamed from eth1
[  455.050713] Could not find device with ifindex 2000 in netnsfd 11
[  455.050837] Could not find netns with fd: 2000
[  455.050888] Cannot link a netdevsim to itself
[  455.050938] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).