[ovs-discuss] IP address wildcard mask do not follow openflow 1.0 spec

edward wilson edward.wilson2601 at gmail.com
Fri Jan 27 09:11:24 UTC 2012


HI,
I am using openvswitch 1.2.2 on my linux 2.6.38 fedora machine.
I added following flow on switch
*
ovs-ofctl add-flows br0 "dl_type=0x0800 nw_proto=1 nw_dst=10.0.3.4 nw_src=
10.1.3.2/8 actions=1"*

Now when i use ovs-ofctl dump-flows br1, it shows

* cookie=0x0, duration=3.855s, table=0, n_packets=0, n_bytes=0,
icmp,nw_dst=10.0.3.4,nw_src=10.0.0.0/8 actions=NORMAL*


Now openvswitch interpret this wildcard mask as CIDR suffix, and it has
wildcarded 24 least significant bits, first 8 bits are non-wildcard
But as per openflow 1.0 spec wildcard mask is interpreted as CIDR suffix
with opposite meaning , i.e suffix of 8 should wildcard least significant 8
bits of ip address.
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