Symptoms

The PPTP ALG does not support concurrent GRE tunnels on the same PPTP control channel between a client and a server.

Impact

The PPTP Client cannot issue requests on the same PPTP control channel after generating this error condition. The Client is able to create additional PPTP control channels and those messages are handled correctly.

Conditions

This occurs when using multiple concurrent PPTP tunnels from the same client to the same server.

Workaround

None.

Fix Information

Error processing works as expected. Further PPTP messages on this control channel are processed normally.

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips