ADC SG-1 - Manual (Page 186)

Appendix A: SG-1 Vendor-Specific Attributes June 30, 2006
A-28 SG1-UM-8500-03
General:
Format:
adc-avpair = "route:forward-addr=<IP address>",
Example:
adc-avpair = "route:forward-addr=192.168.1.4”
Operation Mode: Access-Accept message
Service-Accept message
Vendor-type: 74
Vendor-length = 2 + 7-15 + attribute length