[  521.963895] netdevsim netdevsim331 eni331np1: renamed from eth0
[  522.060975] netdevsim netdevsim766 eni766np1: renamed from eth1
[  522.320699] Could not find device with ifindex 2000 in netnsfd 11
[  522.320917] Could not find netns with fd: 2000
[  522.321058] Cannot link a netdevsim to itself
[  522.321185] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).