[  478.053032] netdevsim netdevsim312 eni312np1: renamed from eth0
[  478.053835] netdevsim netdevsim519 eni519np1: renamed from eth0
[  478.147626] Could not find device with ifindex 2000 in netnsfd 11
[  478.147770] Could not find netns with fd: 2000
[  478.147849] Cannot link a netdevsim to itself
[  478.147972] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).