[  491.529121] netdevsim netdevsim277 eni277np1: renamed from eth0
[  491.625798] netdevsim netdevsim620 eni620np1: renamed from eth1
[  491.887145] Could not find device with ifindex 2000 in netnsfd 11
[  491.887448] Could not find netns with fd: 2000
[  491.887540] Cannot link a netdevsim to itself
[  491.887643] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).