digraph techviz {
  graph [rankdir=LR, splines=ortho, nodesep=0.55, ranksep=0.85];
  node [fontname=Helvetica, fontsize=11, margin="0.18,0.12", style="rounded,filled", fillcolor=white, color="#2d4357", penwidth=1.5];
  edge [fontname=Helvetica, fontsize=10, color="#364b5f", penwidth=1.4, arrowsize=0.75];
  n0 [label="virsh", shape=box, style="rounded,filled"];
  n1 [label="libvirt", shape=box, style="rounded,filled"];
  n2 [label="QEMU", shape=box, style="rounded,filled"];
  n3 [label="virtio-net Device Model", shape=box, style="rounded,filled"];
  n4 [label="Physical NIC", shape=box, style="rounded,filled"];
  n5 [label="Physical NIC Driver", shape=box, style="rounded,filled"];
  n6 [label="Linux Bridge /\nRouting / NAT", shape=box, style="rounded,filled"];
  n7 [label="TAP", shape=box, style="rounded,filled"];
  n8 [label="vhost-net", shape=box, style="rounded,filled"];
  n9 [label="QEMU virtio backend", shape=box, style="rounded,filled"];
  n10 [label="virtqueue", shape=oval, style="rounded,filled"];
  n11 [label="Guest", shape=box, style="rounded,filled"];
  n0 -> n1 [label="Control / Setup", style=solid];
  n1 -> n2 [label="NIC config", style=solid];
  n2 -> n3 [label="QEMU process", style=solid];
  n4 -> n5 [label="Ethernet Frame", style=solid];
  n5 -> n6 [label="L2 forwarding", style=solid];
  n6 -> n7 [label="Ethernet Frame", style=solid];
  n3 -> n8 [label="vhost-net backend 설정", style=solid];
  n3 -> n9 [label="", style=solid];
  n7 -> n8 [label="vhost-net 사용", style=solid];
  n7 -> n9 [label="", style=solid];
  n8 -> n10 [label="Data Path", style=solid];
  n9 -> n10 [label="Data Path", style=solid];
  n10 -> n11 [label="frontend", style=solid];
}