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"dropped by vpn_encrypt_chain Reason: encryption failure: could not get route params;" error message when client disconnects immediately after connection to the site Technical Level
Symptoms
  • Client disconnects immediately after connection to the site.
  • Tunnel test packets drop on the Gateway (fw ctl zdebug drop | grep 18234):
    ;[vs_1];[tid_0];[fw4_0];fw_log_drop_ex: Packet proto=17 192.118.36.9:18234 -> 10.12.252.39:18022 dropped by vpn_encrypt_chain Reason: encryption failure: could not get route params;
  • There are some users that can connect just fine.
Cause

The orig_route_params kernel table reached its limit and cannot submit new information regarding new users that want to connect.

Note: You cannot manually delete any entries from the table. They should be removed when the Office Mode IP address is released by the Security Gateway.


Solution
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