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[WIP] CORENET-59657: allow default network -> localnet on the same node for any localnet subnet #2726

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ricky-rav wants to merge 3 commits into from
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[WIP] CORENET-59657: allow default network -> localnet on the same node for any localnet subnet #2726

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52c80de
Openflow: lookup conntrack & table=1 only when breth0 is next hop
trozet Aug 27, 2025
d0d15bd
Openflow: drop in_port from IPv6 dispatch OF rule at prio=50
Aug 28, 2025
493bd87
Openflow: lookup conntrack & table=1 when breth0 is next hop (IPv6)
Aug 28, 2025
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12 changes: 6 additions & 6 deletions go-controller/pkg/node/bridgeconfig/bridgeflows.go
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Original file line number Diff line number Diff line change
Expand Up @@ -632,12 +632,12 @@ func (b *BridgeConfiguration) commonFlows(hostSubnets []*net.IPNet) ([]string, e
}

if ofPortPhys != "" {
// table 0, packets coming from external or other localnet ports. Send it through conntrack and
// resubmit to table 1 to know the state and mark of the connection.
// table 0, packets coming from external or other localnet ports and destined to OVN or LOCAL.
// Send it through conntrack and resubmit to table 1 to know the state and mark of the connection.
// Note, there are higher priority rules that take care of traffic coming from LOCAL and OVN ports.
dftFlows = append(dftFlows,
fmt.Sprintf("cookie=%s, priority=50, ip, actions=ct(zone=%d, nat, table=1)",
nodetypes.DefaultOpenFlowCookie, config.Default.ConntrackZone))
fmt.Sprintf("cookie=%s, priority=50, ip, dl_dst=%s, actions=ct(zone=%d, nat, table=1)",
nodetypes.DefaultOpenFlowCookie, bridgeMacAddress, config.Default.ConntrackZone))
}
}

Expand Down Expand Up @@ -733,8 +733,8 @@ func (b *BridgeConfiguration) commonFlows(hostSubnets []*net.IPNet) ([]string, e
// table 0, packets coming from external. Send it through conntrack and
// resubmit to table 1 to know the state and mark of the connection.
dftFlows = append(dftFlows,
fmt.Sprintf("cookie=%s, priority=50, in_port=%s, ipv6, "+
"actions=ct(zone=%d, nat, table=1)", nodetypes.DefaultOpenFlowCookie, ofPortPhys, config.Default.ConntrackZone))
fmt.Sprintf("cookie=%s, priority=50, ipv6, dl_dst=%s, actions=ct(zone=%d, nat, table=1)",
nodetypes.DefaultOpenFlowCookie, bridgeMacAddress, config.Default.ConntrackZone))
}
}
if ofPortPhys != "" {
Expand Down