[  639.877792][T10014] netdevsim netdevsim447 eni447np1: renamed from eth0
[  639.896585][T10016] netdevsim netdevsim630 eni630np1: renamed from eth1
[  640.508751][T10002] Could not find device with ifindex 2000 in netnsfd 11
[  640.509487][T10002] Could not find netns with fd: 2000
[  640.509832][T10002] Cannot link a netdevsim to itself
[  640.510257][T10002] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).