[  483.761320] netdevsim netdevsim688 eni688np1: renamed from eth1
[  483.761719] netdevsim netdevsim340 eni340np1: renamed from eth0
[  483.842502] Could not find device with ifindex 2000 in netnsfd 11
[  483.842581] Could not find netns with fd: 2000
[  483.842629] Cannot link a netdevsim to itself
[  483.842681] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).