[  484.086290] netdevsim netdevsim641 eni641np1: renamed from eth1
[  484.186034] netdevsim netdevsim310 eni310np1: renamed from eth0
[  484.569618] Could not find device with ifindex 2000 in netnsfd 11
[  484.569792] Could not find netns with fd: 2000
[  484.569885] Cannot link a netdevsim to itself
[  484.570010] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).