[  487.554973] netdevsim netdevsim271 eni271np1: renamed from eth0
[  487.555895] netdevsim netdevsim767 eni767np1: renamed from eth1
[  487.665315] Could not find device with ifindex 2000 in netnsfd 11
[  487.665411] Could not find netns with fd: 2000
[  487.665455] Cannot link a netdevsim to itself
[  487.665508] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).