[  495.301791] netdevsim netdevsim303 eni303np1: renamed from eth0
[  495.398534] netdevsim netdevsim649 eni649np1: renamed from eth1
[  495.615236] Could not find device with ifindex 2000 in netnsfd 11
[  495.615577] Could not find netns with fd: 2000
[  495.615694] Cannot link a netdevsim to itself
[  495.615839] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).