[  519.755183] netdevsim netdevsim541 eni541np1: renamed from eth1
[  519.852712] netdevsim netdevsim419 eni419np1: renamed from eth0
[  520.085346] Could not find device with ifindex 2000 in netnsfd 11
[  520.085513] Could not find netns with fd: 2000
[  520.085585] Cannot link a netdevsim to itself
[  520.085672] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).