[  483.476841] netdevsim netdevsim500 eni500np1: renamed from eth0
[  483.477330] netdevsim netdevsim691 eni691np1: renamed from eth1
[  483.556617] Could not find device with ifindex 2000 in netnsfd 11
[  483.556749] Could not find netns with fd: 2000
[  483.556851] Cannot link a netdevsim to itself
[  483.556967] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).