[  777.303836][T14747] netdevsim netdevsim422 eni422np1: renamed from eth0
[  777.321311][T14750] netdevsim netdevsim720 eni720np1: renamed from eth1
[  777.934973][T14736] Could not find device with ifindex 2000 in netnsfd 11
[  777.936024][T14736] Could not find netns with fd: 2000
[  777.936401][T14736] Cannot link a netdevsim to itself
[  777.936851][T14736] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).