PLAN E: SRv6 GRE-over-SRv6 Alt (Anonymized Topology)
======================================================

   +-------------+        +-------------+           +-------------+              +-------------+        +-------------+
   | CE-Source-1 |--------| PE-Source-1 |-----------|   P-Core-1  |--------------|  PE-Dest-1  |--------|  CE-Dest-1  |
   | 10.10.1.0/24|        | 2001:db8:1  | \       / | 2001:db8:101| \       /    | 2001:db8:5  |        | 10.10.2.0/24|
   +------+------+        +------+------+  \     /  +------+------+  \     /     +------+------+        +------+------+
          |                      |          \   /          |          \   /             |                      |
          |                      |           \ /           |           \ /              |                      |
          |                      |            X            |            X               |                      |
          |                      |           / \           |           / \              |                      |
          |                      |          /   \          |          /   \             |                      |
   +------+------+        +------+------+  /     \  +------+------+  /     \     +------+------+        +------+------+
   | CE-Source-2 |--------| PE-Source-2 |-----------|   P-Core-2  |--------------|  PE-Dest-2  |--------|  CE-Dest-2  |
   | 10.10.1.0/24|        | 2001:db8:2  |           | 2001:db8:102|              | 2001:db8:6  |        | 10.10.2.0/24|
   +-------------+        +-------------+           +-------------+              +-------------+        +-------------+

LOGICAL FLOWS:
1. RED PATH (Color 100):
   CE-Source-1 -> PE-Source-1 -> P-Core-1 -> PE-Dest-1 -> CE-Dest-1
   
2. BLUE PATH (Color 200):
   CE-Source-2 -> PE-Source-2 -> P-Core-2 -> PE-Dest-2 -> CE-Dest-2