[  491.827393] netdevsim netdevsim557 eni557np1: renamed from eth1
[  491.922736] netdevsim netdevsim481 eni481np1: renamed from eth0
[  492.154462] Could not find device with ifindex 2000 in netnsfd 11
[  492.154908] Could not find netns with fd: 2000
[  492.155035] Cannot link a netdevsim to itself
[  492.155191] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).