[  477.210783] netdevsim netdevsim394 eni394np1: renamed from eth0
[  477.211099] netdevsim netdevsim637 eni637np1: renamed from eth1
[  477.304252] Could not find device with ifindex 2000 in netnsfd 11
[  477.304418] Could not find netns with fd: 2000
[  477.304541] Cannot link a netdevsim to itself
[  477.304666] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).