[ 1249.894246][T12778] netdevsim netdevsim300 eni300np1: renamed from eth0
[ 1250.007437][T12775] netdevsim netdevsim630 eni630np1: renamed from eth1
[ 1252.648859][T12770] Could not find device with ifindex 2000 in netnsfd 11
[ 1252.650018][T12770] Could not find netns with fd: 2000
[ 1252.650890][T12770] Cannot link a netdevsim to itself
[ 1252.652004][T12770] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).