[  764.461475][T14578] netdevsim netdevsim421 eni421np1: renamed from eth0
[  764.483543][T14581] netdevsim netdevsim726 eni726np1: renamed from eth1
[  765.006710][T14566] Could not find device with ifindex 2000 in netnsfd 11
[  765.007224][T14566] Could not find netns with fd: 2000
[  765.007570][T14566] Cannot link a netdevsim to itself
[  765.007972][T14566] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).