Cisco Cisco IOS Software Release 12.4(4)T

Conditions: This symptom has been observed only with EzVPN VTI and the inside subnet 
configured on the EzVPN profile.

Workaround: There is no workaround. 

CSCej45061

Symptoms: Attempts to remove a PRI group fail.

Conditions: This symptom is observed when an NFAS group has group number 0 and when you 
attempt to remove a FAS PRI group.

Workaround: Shut down the NFAS group before you remove the FAS PRI group. 

CSCsa42221

Symptoms: A call reference flag is missing from a TBCT request message to a third-party vendor 
ISDN switch.

Conditions: This symptom is observed on a Cisco AS5400 but may also occur on other platforms.

Workaround: There is no workaround. 

CSCsb83234

Symptoms: UDP port 1701 (L2TP) is still opened by a port scan. The router does not send a "port 
unreachable" message for a packet that uses UDP 1701.

Conditions: This symptom is observed on a Cisco 1812 router with Cisco IOS Release 12.3(14)YT 
or Release 12.4(2)T1.

Workaround: There is no workaround.

This section describes possibly unexpected behavior by Cisco IOS Release 12.4(4)T. All the caveats 
listed in this section are resolved in Cisco IOS Release 12.4(4)T. This section describes severity 1 and 2 
caveats and select severity 3 caveats.

CSCsb52925

Symptoms: A router crashes while running an IP SLA jitter operation.

Conditions: This symptom is observed on a Cisco router that runs Cisco IOS interim 
Release 12.4(3.2)T when a nonexistent VRF is configured for the jitter operation.

Workaround: There is no workaround.