[  474.869880] netdevsim netdevsim487 eni487np1: renamed from eth0
[  474.870791] netdevsim netdevsim731 eni731np1: renamed from eth1
[  474.954613] Could not find device with ifindex 2000 in netnsfd 11
[  474.954708] Could not find netns with fd: 2000
[  474.954753] Cannot link a netdevsim to itself
[  474.954802] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).