[  488.236100] netdevsim netdevsim302 eni302np1: renamed from eth0
[  488.236764] netdevsim netdevsim630 eni630np1: renamed from eth1
[  488.324288] Could not find device with ifindex 2000 in netnsfd 11
[  488.324376] Could not find netns with fd: 2000
[  488.324421] Cannot link a netdevsim to itself
[  488.324474] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).