[ 1282.764096][T12844] netdevsim netdevsim521 eni521np1: renamed from eth1
[ 1282.859733][T12847] netdevsim netdevsim511 eni511np1: renamed from eth0
[ 1285.424529][T12834] Could not find device with ifindex 2000 in netnsfd 11
[ 1285.426475][T12834] Could not find netns with fd: 2000
[ 1285.427853][T12834] Cannot link a netdevsim to itself
[ 1285.429122][T12834] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).