[ 1011.719929][T12585] netdevsim netdevsim421 eni421np1: renamed from eth0
[ 1011.727945][T12634] netdevsim netdevsim664 eni664np1: renamed from eth1
[ 1013.605251][T12629] Could not find device with ifindex 2000 in netnsfd 11
[ 1013.606506][T12629] Could not find netns with fd: 2000
[ 1013.607270][T12629] Cannot link a netdevsim to itself
[ 1013.608485][T12629] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).