[  515.192467] netdevsim netdevsim312 eni312np1: renamed from eth0
[  515.290913] netdevsim netdevsim522 eni522np1: renamed from eth1
[  515.482475] Could not find device with ifindex 2000 in netnsfd 11
[  515.482670] Could not find netns with fd: 2000
[  515.482755] Cannot link a netdevsim to itself
[  515.482852] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).