[  497.931597] netdevsim netdevsim466 eni466np1: renamed from eth0
[  498.027534] netdevsim netdevsim633 eni633np1: renamed from eth1
[  498.253496] Could not find device with ifindex 2000 in netnsfd 11
[  498.253923] Could not find netns with fd: 2000
[  498.254045] Cannot link a netdevsim to itself
[  498.254183] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).