[ 1235.901649][T12777] netdevsim netdevsim721 eni721np1: renamed from eth1
[ 1235.913332][T12779] netdevsim netdevsim490 eni490np1: renamed from eth0
[ 1238.539805][T12771] Could not find device with ifindex 2000 in netnsfd 11
[ 1238.540908][T12771] Could not find netns with fd: 2000
[ 1238.541756][T12771] Cannot link a netdevsim to itself
[ 1238.543457][T12771] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).