[  519.358291] netdevsim netdevsim655 eni655np1: renamed from eth1
[  519.455456] netdevsim netdevsim321 eni321np1: renamed from eth0
[  519.723758] Could not find device with ifindex 2000 in netnsfd 11
[  519.724013] Could not find netns with fd: 2000
[  519.724132] Cannot link a netdevsim to itself
[  519.724237] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).