[  456.551773] netdevsim netdevsim407 eni407np1: renamed from eth0
[  456.552448] netdevsim netdevsim556 eni556np1: renamed from eth1
[  456.636600] Could not find device with ifindex 2000 in netnsfd 11
[  456.636694] Could not find netns with fd: 2000
[  456.636743] Cannot link a netdevsim to itself
[  456.636794] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).