[  475.068574] netdevsim netdevsim456 eni456np1: renamed from eth0
[  475.070248] netdevsim netdevsim640 eni640np1: renamed from eth1
[  475.158353] Could not find device with ifindex 2000 in netnsfd 11
[  475.158446] Could not find netns with fd: 2000
[  475.158494] Cannot link a netdevsim to itself
[  475.158544] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).