Network after DMNetworkLayoutSetUp:
DM Object: 2 MPI processes
  type: network
  NSubnets: 1; NEdges: 3; NVertices: 6; NSharedVertices: 0.
  [0] nEdges: 1; nVertices: 2; nSharedVertices: 0
     Subnet 0: nEdges 1, nVertices(include shared vertices) 2
       edge 0: 2 ----> 3
  [1] nEdges: 2; nVertices: 3; nSharedVertices: 0
     Subnet 0: nEdges 2, nVertices(include shared vertices) 3
       edge 1: 3 ----> 5
       edge 2: 4 ----> 5
PetscSection Object: 2 MPI processes
  type not yet set
Process 0:
  (   0) dof 1 offset   0
  (   1) dof 2 offset   1
  (   2) dof 2 offset   3
Process 1:
  (   0) dof 1 offset   0
  (   1) dof 1 offset   1
  (   2) dof 2 offset   2
  (   3) dof 2 offset   4
  (   4) dof 2 offset   6

Network after DMNetworkDistribute:
DM Object: 2 MPI processes
  type: network
  NSubnets: 1; NEdges: 3; NVertices: 6; NSharedVertices: 0.
  [0] nEdges: 2; nVertices: 3; nSharedVertices: 0
     Subnet 0: nEdges 2, nVertices(include shared vertices) 3
       edge 0: 2 ----> 3
       edge 1: 3 ----> 5
  [1] nEdges: 1; nVertices: 2; nSharedVertices: 0
     Subnet 0: nEdges 1, nVertices(include shared vertices) 2
       edge 2: 4 ----> 5
PetscSection Object: 2 MPI processes
  type not yet set
Process 0:
  (   0) dof 1 offset   0
  (   1) dof 1 offset   1
  (   2) dof 2 offset   2
  (   3) dof 2 offset   4
  (   4) dof 2 offset   6
Process 1:
  (   0) dof 1 offset   0
  (   1) dof 2 offset   1
  (   2) dof 2 offset   3