[  510.756239] netdevsim netdevsim563 eni563np1: renamed from eth1
[  510.854262] netdevsim netdevsim394 eni394np1: renamed from eth0
[  511.068203] Could not find device with ifindex 2000 in netnsfd 11
[  511.068372] Could not find netns with fd: 2000
[  511.068449] Cannot link a netdevsim to itself
[  511.068544] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).