I see these errors which don't appear with the inbox openvswitch driver.
[ 4198.153985] gre_compat_init: cannot register gre_cisco protocol handler
This indicates that the ip_gre module is loaded when OVS is trying to
register its handler.
Doesn't appear to be.
18:23 dl6-fed-19:~/openvswitch (master)
> lsmod | grep gre
gre 13888 1 openvswitch
I dug a little. We seem to be doing the gre_add_protocol() twice. Once in
gre_init() in gre_demux.c and then again in gre_compat_init() for kernels >=
2.6.37 (Fedora is 3.11.8). The one in gre_compat_init() returns failure, I guess
because the cmpxchg returns non-NULL.
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