[ 1236.161926][T11136] netdevsim netdevsim265 eni265np1: renamed from eth0 [ 1236.188017][T11134] netdevsim netdevsim634 eni634np1: renamed from eth1 [ 1239.502480][T11128] Could not find device with ifindex 2000 in netnsfd 11 [ 1239.503670][T11128] Could not find netns with fd: 2000 [ 1239.504621][T11128] Cannot link a netdevsim to itself [ 1239.505338][T11128] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).