[  487.491147] netdevsim netdevsim478 eni478np1: renamed from eth0
[  487.592944] netdevsim netdevsim737 eni737np1: renamed from eth1
[  487.966387] Could not find device with ifindex 2000 in netnsfd 11
[  487.966539] Could not find netns with fd: 2000
[  487.966613] Cannot link a netdevsim to itself
[  487.966717] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).