[  475.074272] netdevsim netdevsim631 eni631np1: renamed from eth1
[  475.074651] netdevsim netdevsim305 eni305np1: renamed from eth0
[  475.149745] Could not find device with ifindex 2000 in netnsfd 11
[  475.149848] Could not find netns with fd: 2000
[  475.149900] Cannot link a netdevsim to itself
[  475.149966] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).