[  493.556029] netdevsim netdevsim740 eni740np1: renamed from eth1
[  493.652654] netdevsim netdevsim488 eni488np1: renamed from eth0
[  493.893761] Could not find device with ifindex 2000 in netnsfd 11
[  493.894124] Could not find netns with fd: 2000
[  493.894253] Cannot link a netdevsim to itself
[  493.894374] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).