[  512.825139] netdevsim netdevsim498 eni498np1: renamed from eth0
[  512.922841] netdevsim netdevsim749 eni749np1: renamed from eth1
[  513.162004] Could not find device with ifindex 2000 in netnsfd 11
[  513.162209] Could not find netns with fd: 2000
[  513.162292] Cannot link a netdevsim to itself
[  513.162394] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).