[  476.074213] netdevsim netdevsim640 eni640np1: renamed from eth1
[  476.175114] netdevsim netdevsim447 eni447np1: renamed from eth0
[  476.479631] Could not find device with ifindex 2000 in netnsfd 11
[  476.479765] Could not find netns with fd: 2000
[  476.479847] Cannot link a netdevsim to itself
[  476.479957] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).