[  474.019388] netdevsim netdevsim731 eni731np1: renamed from eth1
[  474.020349] netdevsim netdevsim277 eni277np1: renamed from eth0
[  474.111861] Could not find device with ifindex 2000 in netnsfd 11
[  474.112020] Could not find netns with fd: 2000
[  474.112128] Cannot link a netdevsim to itself
[  474.112245] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).