[ 1282.337282][T12058] netdevsim netdevsim745 eni745np1: renamed from eth1 [ 1282.341883][T12059] netdevsim netdevsim498 eni498np1: renamed from eth0 [ 1285.963127][T12051] Could not find device with ifindex 2000 in netnsfd 11 [ 1285.963861][T12051] Could not find netns with fd: 2000 [ 1285.964442][T12051] Cannot link a netdevsim to itself [ 1285.965138][T12051] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).