[  488.716554] netdevsim netdevsim646 eni646np1: renamed from eth1
[  488.817475] netdevsim netdevsim312 eni312np1: renamed from eth0
[  489.175412] Could not find device with ifindex 2000 in netnsfd 11
[  489.175571] Could not find netns with fd: 2000
[  489.175654] Cannot link a netdevsim to itself
[  489.175773] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).