[ovs-discuss] [OVN]: IP address representing external destinations

Alexander Constantinescu aconstan at redhat.com
Wed Sep 16 12:41:43 UTC 2020


I was wondering if anybody is aware of an IP address signifying "external
IP destinations"?

Currently in OVN we can use the IP address for match expressions
in logical routing policies / ACLs when we want to specify a source or
destination IP equating to the pseudo term: "all IP addresses",ex:
'match="ip4.src == && ip4.dst =="'

Essentially what I would need to do for an OVN-Kubernetes feature is
specify such a match condition for south -> north traffic, i.e when the
destination IP address is external to the cluster, and most likely
"unknown" to OVN. Thus, when OVN does not know how to route it within the
OVN network topology and has no choice except sending it out the default

Do we have such an IP address in OVN/OVS? Would it be feasible to
introduce, in case there is none?

Thanks in advance!


Best regards,

Alexander Constantinescu

Software Engineer, Openshift SDN

Red Hat <https://www.redhat.com/>

aconstan at redhat.com
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