[  522.536050] netdevsim netdevsim743 eni743np1: renamed from eth1
[  522.633689] netdevsim netdevsim321 eni321np1: renamed from eth0
[  522.870906] Could not find device with ifindex 2000 in netnsfd 11
[  522.871110] Could not find netns with fd: 2000
[  522.871212] Cannot link a netdevsim to itself
[  522.871326] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).