Describe sysctl ip_forward usecase

proxmox/base.yaml

@@ -72,9 +72,12 @@
           options vhost max_mem_regions=512
         dest: /etc/modprobe.d/vhost.conf
 
-    - name: sysctl.conf UNKNOWN CONFIG DRIFT #TODO: was in /etc/sysctl.conf on all, including new nodes (not present in upstream deb packages), including it just in case. This needs docs on what it is used for / needed by.
+    - name: sysctl.conf
       ansible.builtin.copy:
         content: |
+          # Enable IP Routing 
+          # Used by FRR BGP to allow PVE to do OAuth against k8s Passmower
+          # and FRR OpenFabric CEPH Full Mesh Network
           net.ipv4.ip_forward=1
           net.ipv6.conf.all.forwarding=1
         dest: /etc/sysctl.d/99-k-space.conf