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Cisco Bug: CSCta72399 - NAT not respecting VRF when translating DNS

Last Modified

Feb 03, 2017

Products (2)

  • Cisco IOS
  • Cisco 6500/7600 Series Multiprocessor WAN Application Module

Known Affected Releases


Description (partial)


A DNS packet which is traversing two different VRF's configured with NAT is being translated in the following fashion:
1) Address X is being translated to address Y in VRF-1
2) Instead of being translated from address Y to address Z in VRF-2, the address is changed from address Y to address X.


Only seen when the DNS packet is crossing two different VRF's with NAT.
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