[  522.751180] netdevsim netdevsim500 eni500np1: renamed from eth0
[  522.847642] netdevsim netdevsim599 eni599np1: renamed from eth1
[  523.089693] Could not find device with ifindex 2000 in netnsfd 11
[  523.089954] Could not find netns with fd: 2000
[  523.090120] Cannot link a netdevsim to itself
[  523.090280] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).