[  487.654814] netdevsim netdevsim291 eni291np1: renamed from eth0
[  487.756757] netdevsim netdevsim550 eni550np1: renamed from eth1
[  488.121750] Could not find device with ifindex 2000 in netnsfd 11
[  488.121899] Could not find netns with fd: 2000
[  488.121968] Cannot link a netdevsim to itself
[  488.122058] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).