[  487.862805] netdevsim netdevsim291 eni291np1: renamed from eth0
[  487.965436] netdevsim netdevsim678 eni678np1: renamed from eth1
[  488.359709] Could not find device with ifindex 2000 in netnsfd 11
[  488.359861] Could not find netns with fd: 2000
[  488.359959] Cannot link a netdevsim to itself
[  488.360060] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).