[  484.919137] netdevsim netdevsim337 eni337np1: renamed from eth0
[  484.919600] netdevsim netdevsim688 eni688np1: renamed from eth1
[  485.008120] Could not find device with ifindex 2000 in netnsfd 11
[  485.008207] Could not find netns with fd: 2000
[  485.008252] Cannot link a netdevsim to itself
[  485.008304] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).