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+---
+lastproofread: '2026-02-26'
+---
+
+(vpp-config-dataplane-ipv6)=
+
+```{include} /_include/need_improvement.txt
+```
+
+
+# VPP IPv6 Configuration
+
+VPP lets you configure resources allocated for IPv6 traffic processing
+independently from IPv4. This helps ensure that in networks without IPv6
+traffic, resources are not wasted. If IPv6 traffic is present, especially
+with large routing tables, you must allocate additional resources for IPv6
+processing to keep the dataplane stable.
+
+You can configure two main resources for IPv6 traffic processing:
+
+```{cfgcmd} set vpp settings resource-allocation ipv6 hash-buckets \<value\>
+```
+
+This parameter configures the number of hash buckets used for IPv6
+routing. If you have a large IPv6 routing table, you may need to increase
+this value to ensure efficient routing table performance and fast lookups.
+
+```{cfgcmd} set vpp settings resource-allocation ipv6 heap-size \<value\>
+```
+
+This parameter configures the heap size used for IPv6 forwarding. If you
+have a large IPv6 routing table, you may need to increase this value to
+ensure the routing table can accommodate all routes.
+
+## Potential Issues and Troubleshooting
+
+Improper IPv6 configuration can lead to various issues, including:
+
+- Inefficient, slow routing table lookups and traffic processing due to
+  insufficient hash buckets
+- Dataplane crashes or instability due to insufficient heap size when
+  handling a large number of IPv6 routes
+- Overall dataplane instability when handling IPv6 traffic
+
+Consider increasing configuration values if you experience issues with
+IPv6 traffic processing or if you have a large IPv6 routing table.