[  486.644222] netdevsim netdevsim361 eni361np1: renamed from eth0
[  486.645600] netdevsim netdevsim623 eni623np1: renamed from eth1
[  486.716501] Could not find device with ifindex 2000 in netnsfd 11
[  486.716588] Could not find netns with fd: 2000
[  486.716629] Cannot link a netdevsim to itself
[  486.716683] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).