[  513.266514] netdevsim netdevsim556 eni556np1: renamed from eth1
[  513.364407] netdevsim netdevsim468 eni468np1: renamed from eth0
[  513.568082] Could not find device with ifindex 2000 in netnsfd 11
[  513.568232] Could not find netns with fd: 2000
[  513.568304] Cannot link a netdevsim to itself
[  513.568391] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).