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Cisco Bug: CSCup23059 - ipv6 RPF without "allow-default" accepted in running conf

Last Modified

Feb 08, 2019

Products (4)

  • Cisco IOS
  • Cisco uBR10012 Performance Routing Engine 4
  • Cisco uBR7200 Series NPE-G2 Network Processing Engine
  • Cisco uBR10012 Performance Routing Engine 5

Known Affected Releases


Description (partial)

The configuration of "ipv6 verify unicast source reachable-via rx" is accepted in the running configuration while strict RPF is only supported with the "allow-default" option. 

ubr3(config-if)#ipv6 verify unicast source reachable-via rx 
% Platform only supports strict RPF with allow-default for IPv6
ubr3(config-if)#do sh run int bundle 1 | i ipv6 verify
ipv6 verify unicast source reachable-via rx        <----------------------- Command is accepted without allow-default option.

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