[  486.643445] netdevsim netdevsim423 eni423np1: renamed from eth0
[  486.744074] netdevsim netdevsim553 eni553np1: renamed from eth1
[  487.126039] Could not find device with ifindex 2000 in netnsfd 11
[  487.126202] Could not find netns with fd: 2000
[  487.126286] Cannot link a netdevsim to itself
[  487.126379] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).