On Aug 23, 2013, at 11:26 AM, Ben Pfaff <[email protected]> wrote:
> Looking at tnl_find() in ofproto/tunnel.c, it maintains the invariant
> "set <field> to 0 if and only if we set <field>_flow to true", except
> for <field> = ip_src.  Is that a bug?
> 

No, it is not a bug. Tunnel config allows you to leave local address unset 
(=0), allowing the selected route to determine the source address to use. Even 
more, it looks like find_route() in kernel might override the source address, 
even if it is given (in the config, or in the flow with _flow set to true).

  Jarno

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