Currently, arping from a vtep-gw physical-switch port to
a VIF IP address does not work.
When a physical-switch-port arps for an IP address
of a VIF, that arp packet comes into the VIF hypervisor via a
vxlan tunnel. That arp packet must not be responded-to by the
arp responder table because, potentially, multiple hypervisors
could independently respond.
Signed-off-by: Ramu Ramamurthy <ramu.ramamur...@us.ibm.com>
---
ovn/northd/ovn-northd.8.xml | 5 +++--
ovn/northd/ovn-northd.c | 5 ++++-
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/ovn/northd/ovn-northd.8.xml b/ovn/northd/ovn-northd.8.xml
index 1da633a..f27b776 100644
--- a/ovn/northd/ovn-northd.8.xml
+++ b/ovn/northd/ovn-northd.8.xml
@@ -421,8 +421,9 @@
<ul>
<li>
- Priority-100 flows to skip ARP responder if inport is of type
- <code>localnet</code>, and advances directly to the next table.
+ Priority-100 flows to skip the ARP responder if inport type is
+ <code>localnet</code> or <code>vtep</code>, and advances directly
+ to the next table.
</li>
<li>
diff --git a/ovn/northd/ovn-northd.c b/ovn/northd/ovn-northd.c
index cdc5525..9606c95 100644
--- a/ovn/northd/ovn-northd.c
+++ b/ovn/northd/ovn-northd.c
@@ -2683,7 +2683,10 @@ build_lswitch_flows(struct hmap *datapaths, struct hmap
*ports,
continue;
}
- if (!strcmp(op->nbsp->type, "localnet")) {
+ /* Skip arp responder if the logical switch inport
+ * is of type localnet or vtep. */
+ if (!strcmp(op->nbsp->type, "localnet")
+ || !strcmp(op->nbsp->type, "vtep")) {
ds_clear(&match);
ds_put_format(&match, "inport == %s", op->json_key);
ovn_lflow_add(lflows, op->od, S_SWITCH_IN_ARP_ND_RSP, 100,
--
1.9.1
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