[  455.885673] netdevsim netdevsim321 eni321np1: renamed from eth0
[  455.887733] netdevsim netdevsim532 eni532np1: renamed from eth1
[  455.989610] Could not find device with ifindex 2000 in netnsfd 11
[  455.989714] Could not find netns with fd: 2000
[  455.989755] Cannot link a netdevsim to itself
[  455.989801] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).