[  521.341966] netdevsim netdevsim672 eni672np1: renamed from eth1
[  521.440211] netdevsim netdevsim428 eni428np1: renamed from eth0
[  521.664199] Could not find device with ifindex 2000 in netnsfd 11
[  521.664430] Could not find netns with fd: 2000
[  521.664538] Cannot link a netdevsim to itself
[  521.664668] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).