[  821.918561][T15841] netdevsim netdevsim336 eni336np1: renamed from eth0
[  821.927153][T15843] netdevsim netdevsim683 eni683np1: renamed from eth1
[  822.521521][T15830] Could not find device with ifindex 2000 in netnsfd 11
[  822.522236][T15830] Could not find netns with fd: 2000
[  822.522763][T15830] Cannot link a netdevsim to itself
[  822.523818][T15830] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).