[  486.558409] netdevsim netdevsim723 eni723np1: renamed from eth1
[  486.654918] netdevsim netdevsim345 eni345np1: renamed from eth0
[  486.893686] Could not find device with ifindex 2000 in netnsfd 11
[  486.893916] Could not find netns with fd: 2000
[  486.893988] Cannot link a netdevsim to itself
[  486.894074] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).