[  482.269617] netdevsim netdevsim305 eni305np1: renamed from eth0
[  482.371829] netdevsim netdevsim521 eni521np1: renamed from eth1
[  482.699442] Could not find device with ifindex 2000 in netnsfd 11
[  482.699577] Could not find netns with fd: 2000
[  482.699649] Cannot link a netdevsim to itself
[  482.699739] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).