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Cisco Bug: CSCua86310 - Not allocating prefix when relay intf configured with unnnum intf

Last Modified

Feb 27, 2018

Products (1)

  • Cisco IOS

Known Affected Releases

12.2(33.6.10)SRE 12.2(33.7.20)SRE 12.2(33.9.21)SXI 12.2(33.9.34)SXI 15.0(1)IA273.352 15.0(1)IA273.378 15.1(0)SY99.3 15.2(2)S1.7 15.2(4)TST 15.3(0.9)S

Description (partial)

Symptoms: When relay is configured with unnumbered interface, it appears the 
packet is sent out of the loopback interface (instead of the serial 
interface) to the server, which does not receive the packet. 

Conditions: The issue happens only when unnumbered loopback address is used 
on the relay interface which connects to server. If an IPv6 address is used 
directly on the interface, it works fine.
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