[  485.898093] netdevsim netdevsim511 eni511np1: renamed from eth0
[  485.995384] netdevsim netdevsim542 eni542np1: renamed from eth1
[  486.204462] Could not find device with ifindex 2000 in netnsfd 11
[  486.204770] Could not find netns with fd: 2000
[  486.204849] Cannot link a netdevsim to itself
[  486.204935] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).