[ 1239.860941][T11268] netdevsim netdevsim421 eni421np1: renamed from eth0
[ 1239.971205][T11266] netdevsim netdevsim660 eni660np1: renamed from eth1
[ 1243.307130][T11260] Could not find device with ifindex 2000 in netnsfd 11
[ 1243.307876][T11260] Could not find netns with fd: 2000
[ 1243.308458][T11260] Cannot link a netdevsim to itself
[ 1243.309131][T11260] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).