This command is available on a wide range of Cisco devices, including the ISR4K, ASR1K, and many others.
The specific IOS-XE version that supports the "ip dhcp relay address" command may vary depending on the device model and platform. However, this command is a standard feature in most Cisco IOS releases, including IOS-XE 16.9 and later.
To be more specific, here are some examples of IOS-XE versions that support "ip dhcp relay address" on certain devices:
- ISR 4000 series: IOS-XE 3.14S and later.
- ASR 1000 series: IOS-XE 3.11S and later.
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