[  485.829184] netdevsim netdevsim270 eni270np1: renamed from eth0
[  485.831777] netdevsim netdevsim733 eni733np1: renamed from eth1
[  486.164977] Could not find device with ifindex 2000 in netnsfd 11
[  486.165190] Could not find netns with fd: 2000
[  486.165294] Cannot link a netdevsim to itself
[  486.165419] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).