[ 1271.650143][T12891] netdevsim netdevsim421 eni421np1: renamed from eth0
[ 1271.787464][T12892] netdevsim netdevsim734 eni734np1: renamed from eth1
[ 1274.437523][T12878] Could not find device with ifindex 2000 in netnsfd 11
[ 1274.438847][T12878] Could not find netns with fd: 2000
[ 1274.440531][T12878] Cannot link a netdevsim to itself
[ 1274.441950][T12878] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).