[  488.938124] netdevsim netdevsim377 eni377np1: renamed from eth0
[  489.035806] netdevsim netdevsim721 eni721np1: renamed from eth1
[  489.241578] Could not find device with ifindex 2000 in netnsfd 11
[  489.241960] Could not find netns with fd: 2000
[  489.242072] Cannot link a netdevsim to itself
[  489.242229] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).