[  716.277327][T13060] netdevsim netdevsim456 eni456np1: renamed from eth0
[  716.297161][T13062] netdevsim netdevsim539 eni539np1: renamed from eth1
[  717.030968][T13048] Could not find device with ifindex 2000 in netnsfd 11
[  717.033484][T13048] Could not find netns with fd: 2000
[  717.033905][T13048] Cannot link a netdevsim to itself
[  717.034397][T13048] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).