[  481.901238] netdevsim netdevsim661 eni661np1: renamed from eth1
[  482.001778] netdevsim netdevsim322 eni322np1: renamed from eth0
[  482.348182] Could not find device with ifindex 2000 in netnsfd 11
[  482.348332] Could not find netns with fd: 2000
[  482.348407] Cannot link a netdevsim to itself
[  482.348532] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).