[  522.587380] netdevsim netdevsim639 eni639np1: renamed from eth1
[  522.684112] netdevsim netdevsim467 eni467np1: renamed from eth0
[  522.960385] Could not find device with ifindex 2000 in netnsfd 11
[  522.960591] Could not find netns with fd: 2000
[  522.960699] Cannot link a netdevsim to itself
[  522.960848] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).