[  491.164589] netdevsim netdevsim321 eni321np1: renamed from eth0
[  491.165505] netdevsim netdevsim618 eni618np1: renamed from eth1
[  491.240630] Could not find device with ifindex 2000 in netnsfd 11
[  491.240720] Could not find netns with fd: 2000
[  491.240794] Cannot link a netdevsim to itself
[  491.240845] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).