[  511.069637] netdevsim netdevsim449 eni449np1: renamed from eth0
[  511.166749] netdevsim netdevsim538 eni538np1: renamed from eth1
[  511.409753] Could not find device with ifindex 2000 in netnsfd 11
[  511.409930] Could not find netns with fd: 2000
[  511.410004] Cannot link a netdevsim to itself
[  511.410095] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).