[  513.006389] netdevsim netdevsim505 eni505np1: renamed from eth0
[  513.103946] netdevsim netdevsim563 eni563np1: renamed from eth1
[  513.304748] Could not find device with ifindex 2000 in netnsfd 11
[  513.304927] Could not find netns with fd: 2000
[  513.305014] Cannot link a netdevsim to itself
[  513.305118] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).