[  526.253864] netdevsim netdevsim301 eni301np1: renamed from eth0
[  526.350645] netdevsim netdevsim637 eni637np1: renamed from eth1
[  526.589149] Could not find device with ifindex 2000 in netnsfd 11
[  526.589374] Could not find netns with fd: 2000
[  526.589487] Cannot link a netdevsim to itself
[  526.589626] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).