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Cisco Bug: CSCta38452 - ICMP unreachable dropped with unique Nat configuration

Last Modified

Nov 08, 2016

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases


Description (partial)


ICMP unreachable dropped by ASA under 'nat-rpf-failed' in the ASP drop


All conditions must be met to be affected:

1. Client sending traffic with DF bit set must traverse the ASA over a NAT rule
2. Router sending Unreachable is able to communcate with Client UNtranslated through ASA.
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  • Status
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