[  493.399603] netdevsim netdevsim260 eni260np1: renamed from eth0
[  493.495082] netdevsim netdevsim590 eni590np1: renamed from eth1
[  493.737036] Could not find device with ifindex 2000 in netnsfd 11
[  493.737477] Could not find netns with fd: 2000
[  493.737568] Cannot link a netdevsim to itself
[  493.737665] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).