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Cisco Bug: CSCte81027 - Router drops packets after seeing packet with TTL 1 or IP options

Last Modified

Jan 24, 2017

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)

Symptoms: Incoming packets are dropped because route lookup fails after 
packets have been passing through for a while. Ping to default gateway fails, 
but extended ping works fine with "record" option.
Conditions: This symptom occurs when the incoming interface has crypto and 
VRF configured, and CEF is turned on. There is at least one packet sent with 
TTL 1 or the IP options set. This problem is seen in Cisco IOS Release 12.4
(15)T8 and later releases.
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Bug Details Include

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  • Status
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