Feature history for VPN interface SVI

Updated: April 24, 2026

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Details the feature history for VPN Interface SVI, highlighting major updates, enhancements, and the evolution of functionality across software versions.

Table 1. Feature History
Feature Name	Release Information	Description
Support for Configuring Secondary IP Address	Cisco IOS XE Catalyst SD-WAN Release 17.2.1r	You can configure up to four secondary IPv4 or IPv6 addresses, and up to four DHCP helpers. Secondary IP addresses can be useful for forcing unequal load sharing between different interfaces, for increasing the number of IP addresses in a LAN when no more IPs are available from the subnet, and for resolving issues with discontinuous subnets and classful routing protocol.

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