[cag] add needed chain link ips

For directly attached leaf we only need spine-side and for not
directly attached leaf, we're adding leaf-side as that would be
source IPs for traffic to control node.

pkg/ctrl/controlagent/controlagent_ctrl.go

@@ -182,6 +182,21 @@ func (r *ControlAgentReconciler) buildNetworkd(serverName string, conns *wiringa
 		chainSwitchIPs = append(chainSwitchIPs, sw.Spec.IP)
 	}
 
+	for _, conn := range conns.Items {
+		if conn.Spec.Fabric == nil {
+			continue
+		}
+
+		for _, link := range conn.Spec.Fabric.Links {
+			// if leaf is directly attached, we're adding spine side of the link
+			if direct[link.Leaf.DeviceName()] {
+				chainSwitchIPs = append(chainSwitchIPs, link.Spine.IP)
+			} else { // if leaf is not directly attached, we're adding leaf side of the link
+				chainSwitchIPs = append(chainSwitchIPs, link.Leaf.IP)
+			}
+		}
+	}
+
 	for _, conn := range conns.Items {
 		if conn.Spec.Management == nil {
 			continue
@@ -220,7 +235,7 @@ func (r *ControlAgentReconciler) buildNetworkd(serverName string, conns *wiringa
 		}
 		nextHops := []networkdNextHop{}
 
-		// Chain link only for non Management ports as mgmt <> front panel doesn't work on real switches
+		// enable chain link only for non Management ports as mgmt <> front panel doesn't work on real switches
 		if !strings.HasPrefix(swPort, "Management") {
 			for _, ip := range chainSwitchIPs {
 				routes = append(routes, networkdRoute{