[  683.994319][T14446] netdevsim netdevsim493 eni493np1: renamed from eth0
[  684.002893][T14448] netdevsim netdevsim538 eni538np1: renamed from eth1
[  684.404445][T14434] Could not find device with ifindex 2000 in netnsfd 11
[  684.404727][T14434] Could not find netns with fd: 2000
[  684.404908][T14434] Cannot link a netdevsim to itself
[  684.405159][T14434] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).