[  523.341683] netdevsim netdevsim263 eni263np1: renamed from eth0
[  523.438633] netdevsim netdevsim694 eni694np1: renamed from eth1
[  523.694101] Could not find device with ifindex 2000 in netnsfd 11
[  523.694336] Could not find netns with fd: 2000
[  523.694455] Cannot link a netdevsim to itself
[  523.694599] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).