[ 1021.717606][T12129] netdevsim netdevsim623 eni623np1: renamed from eth1
[ 1021.843532][T12131] netdevsim netdevsim471 eni471np1: renamed from eth0
[ 1023.640243][T12454] Could not find device with ifindex 2000 in netnsfd 11
[ 1023.641737][T12454] Could not find netns with fd: 2000
[ 1023.642843][T12454] Cannot link a netdevsim to itself
[ 1023.644477][T12454] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).