[  517.123890] netdevsim netdevsim508 eni508np1: renamed from eth0
[  517.220684] netdevsim netdevsim578 eni578np1: renamed from eth1
[  517.452828] Could not find device with ifindex 2000 in netnsfd 11
[  517.453104] Could not find netns with fd: 2000
[  517.453249] Cannot link a netdevsim to itself
[  517.453410] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).