[  485.346322] netdevsim netdevsim307 eni307np1: renamed from eth0
[  485.448638] netdevsim netdevsim540 eni540np1: renamed from eth1
[  485.790086] Could not find device with ifindex 2000 in netnsfd 11
[  485.790238] Could not find netns with fd: 2000
[  485.790330] Cannot link a netdevsim to itself
[  485.790431] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).