[  524.462993] netdevsim netdevsim511 eni511np1: renamed from eth0
[  524.559674] netdevsim netdevsim527 eni527np1: renamed from eth1
[  524.759600] Could not find device with ifindex 2000 in netnsfd 11
[  524.759741] Could not find netns with fd: 2000
[  524.759816] Cannot link a netdevsim to itself
[  524.759901] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).