[  522.466235] netdevsim netdevsim397 eni397np1: renamed from eth0
[  522.563925] netdevsim netdevsim617 eni617np1: renamed from eth1
[  522.824944] Could not find device with ifindex 2000 in netnsfd 11
[  522.825151] Could not find netns with fd: 2000
[  522.825241] Cannot link a netdevsim to itself
[  522.825340] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).