[ 1241.457393][T11148] netdevsim netdevsim521 eni521np1: renamed from eth1
[ 1241.462167][T11147] netdevsim netdevsim468 eni468np1: renamed from eth0
[ 1244.620625][T11139] Could not find device with ifindex 2000 in netnsfd 11
[ 1244.621441][T11139] Could not find netns with fd: 2000
[ 1244.622088][T11139] Cannot link a netdevsim to itself
[ 1244.623187][T11139] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).