Cisco Cisco IOS Software Release 12.4(23) 릴리즈 노트

Conditions: These symptoms are observed on a Cisco platform when the FIN flag is set in the initial 
ESTAB message from a neighbor. You must reload the router to recover from the symptoms.

Workaround: Do not enter the copy ftp disk command. Rather, enter the copy tftp disk command. 

CSCse05736

Symptoms: A router that is running RCP can be reloaded by a specific packet.

Conditions: This symptom is seen under the following conditions: 1. The router must have RCP 
enabled. 2. The packet must come from the source address of the designated system configured to 
send RCP packets to the router. 3. The packet must have a specific data content.

Workaround: Put access lists on the edge of your network blocking RCP packets to prevent spoofed 
RSH packets. Use another protocol such as SCP. Use VTY ACLs. 

CSCek55209

Symptoms: When the ppp multilink endpoint mac lan-interface command or the ppp multilink 
endpoint ip ip-address command is configured, the router may unexpectedly reload if the multilink 
interface goes to the DOWN state, for example, when a PVC virtual circuit is unconfigured.

Conditions: This symptom is observed on a Cisco router that is configured for Multilink PPP.

Workaround: There is no workaround. Do not use these configuration commands in Cisco IOS 
Releases 12.3, 12.4 or 12.2SB without a fix for this DDTS. 

CSCek56250

Symptoms: A router may reload while executing the show ppp multilink command.

Conditions: This symptom is observed when a multilink bundle goes down while the output is being 
generated.

Workaround: There is no workaround. 

CSCek59078

Symptoms: An L2TPv3 session is established when voluntary tunneling is configured and both peers 
have corresponding configurations. However, after configuring the pseudowire on UUT virtual-PPP 
interface, sessions on UUT and peer are UP, but “virtual-PPP1 is up, line protocol is down.”

Conditions: For this symptom to occur, the virtual-ppp interface was previously deleted using the 
no interface virtual-ppp n command, and then reinstated using the interface virtual-ppp n 
command.

Workaround: Be certain that the virtual-PPP interface has never been unconfigured using the no 
interface virtual- ppp n configuration command since the router was booted. 

CSCir00712

Symptoms: When a LAC receives fragmented data traffic over an L2TP tunnel, the IP layer 
reassembles the packets and routes them over the wrong interface instead of processing them locally.

Conditions: This symptom is observed on a Cisco router that runs Cisco IOS Release 12.3(14)T 
when fragmented L2TP data traffic is received on the LAC from the LNS over the L2TP tunnel. The 
symptom is release-independent.

Workaround: There is no workaround. 

CSCsb24255

Symptoms: A router may generate the following error message and a MALLOC failure may occur: