[ 1230.895299][T11136] netdevsim netdevsim620 eni620np1: renamed from eth1
[ 1230.980724][T11137] netdevsim netdevsim503 eni503np1: renamed from eth0
[ 1234.439762][T11129] Could not find device with ifindex 2000 in netnsfd 11
[ 1234.440508][T11129] Could not find netns with fd: 2000
[ 1234.441073][T11129] Cannot link a netdevsim to itself
[ 1234.441755][T11129] Format for linking two devices is "netnsfd_a:ifidx_a netnsfd_b:ifidx_b" (int uint int uint).