Cisco Cisco IOS Software Release 15.0(1)XA

CSCtg64478 IOS-NAT drops SIP INVITE packet. 

Router drops valid packets, causing SIP call to fail.

This is only for SIP traffic using SDP.

There is no workaround.

CSCsw64971 NAT-Entry deletion fails in SNAT backup router for H.323 RAS traffic. 

NAT-Entry deletion fails in SNAT backup router for H.323 RAS traffic.  We can also see 

crashes on the Standby router if the Active interface is brought up.

This can occur when using SNAT with HSRP and has been seen on numerous images.

There is no workaround.

CSCsx49358 Ping fails between the 6CE-6PE over the MPLS cloud.

A Cisco router may face ping failure between provider and customer networks.

This can occur on routers running Cisco IOS Release 12.4(23.15)T3.

There is no workaround.

CSCte91259 Dynamic DNS may crash router.

A Cisco router may unexpectedly reload due to a bus error after displaying an 

"%IDMGR-3-INVALID_ID" error.

The crash will be seen only if the router is using DHCP Client Dynamic DNS update.

There is no workaround.