[  473.202797] netdevsim netdevsim312 eni312np1: renamed from eth0
[  473.203529] netdevsim netdevsim761 eni761np1: renamed from eth1
[  473.274762] Could not find device with ifindex 2000 in netnsfd 11
[  473.274887] Could not find netns with fd: 2000
[  473.274997] Cannot link a netdevsim to itself
[  473.275120] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).