[  511.403703] netdevsim netdevsim290 eni290np1: renamed from eth0
[  511.501542] netdevsim netdevsim720 eni720np1: renamed from eth1
[  511.740758] Could not find device with ifindex 2000 in netnsfd 11
[  511.741008] Could not find netns with fd: 2000
[  511.741128] Cannot link a netdevsim to itself
[  511.741272] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).