[  498.723306] netdevsim netdevsim256 eni256np1: renamed from eth0
[  498.820412] netdevsim netdevsim672 eni672np1: renamed from eth1
[  499.050396] Could not find device with ifindex 2000 in netnsfd 11
[  499.050743] Could not find netns with fd: 2000
[  499.050824] Cannot link a netdevsim to itself
[  499.050911] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).