[  486.895207] netdevsim netdevsim643 eni643np1: renamed from eth1
[  486.995689] netdevsim netdevsim316 eni316np1: renamed from eth0
[  487.322557] Could not find device with ifindex 2000 in netnsfd 11
[  487.322744] Could not find netns with fd: 2000
[  487.322836] Cannot link a netdevsim to itself
[  487.322962] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).