[ 1220.129293][T11136] netdevsim netdevsim579 eni579np1: renamed from eth1 [ 1220.168805][T11137] netdevsim netdevsim353 eni353np1: renamed from eth0 [ 1223.473358][T11129] Could not find device with ifindex 2000 in netnsfd 11 [ 1223.474144][T11129] Could not find netns with fd: 2000 [ 1223.474734][T11129] Cannot link a netdevsim to itself [ 1223.475427][T11129] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).