svn commit: r197687 - head/sys/net

Tom Judge tom at
Fri Oct 2 06:42:46 UTC 2009

Qing Li wrote:
> Author: qingli
> Date: Thu Oct  1 20:32:29 2009
> New Revision: 197687
> URL:
> Log:
>   The flow-table associates TCP/UDP flows and IP destinations with
>   specific routes. When the routing table changes, for example,
>   when a new route with a more specific prefix is inserted into the
>   routing table, the flow-table is not updated to reflect that change.
>   As such existing connections cannot take advantage of the new path.
>   In some cases the path is broken. This patch will update the affected
>   flow-table entries when a more specific route is added. The route
>   entry is properly marked when a route is deleted from the table.
>   In this case, when the flow-table performs a search, the stale
>   entry is updated automatically. Therefore this patch is not
>   necessary for route deletion.

Will this fix the issue that I see visualising  its self as packet loss 
over a VPN tunnel?

The tunnel is an openvpn (tun mode) tunnel providing a route to however when I ping an address in this network with 
flowtable enabled I see 2-3 out of every 5-6 packets end up being sent 
out of bge0 (IP 172.17.XX.XX/23 GW 172.17.XX.1) to the default gateway 
(which responds with destination host unreachable) rather than down tun0.



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