[  513.982667] netdevsim netdevsim581 eni581np1: renamed from eth1
[  514.080449] netdevsim netdevsim347 eni347np1: renamed from eth0
[  514.295004] Could not find device with ifindex 2000 in netnsfd 11
[  514.295194] Could not find netns with fd: 2000
[  514.295284] Cannot link a netdevsim to itself
[  514.295390] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).