Cisco Bug: CSCuo37960 - ASA does not adjust MTU of TCP connections with IPv6 "packet too big"
Aug 31, 2020
- Cisco ASA 5500-X Series Firewalls
Known Affected Releases
Symptom: ASA does not adjust MTU of TCP sessions generated to or from the ASA itself with an IPv6 "Packet too big" packet. Connections such as HTTPS, SSL or SSH could be affected by this problem. Conditions: This issue happens when a router between ASA and a client device has smaller MTU than ASA and a client.
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Bug Details Include
- Full Description (including symptoms, conditions and workarounds)
- Known Fixed Releases
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