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allow link-local multicast on ingress ports#222

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Merged
rcgoodfellow merged 1 commit into from
Feb 20, 2026
Merged

allow link-local multicast on ingress ports #222

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6 changes: 5 additions & 1 deletion dpd/p4/sidecar.p4
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Original file line numberDiff line numberDiff line change
Expand Up@@ -746,7 +746,11 @@ control NatIngress (
hdr.inner_eth.ether_type = hdr.vlan.ether_type;
hdr.vlan.setInvalid();
}
} else if (meta.uplink_ingress && !meta.is_switch_address) {
} else if (
meta.uplink_ingress &&
!meta.is_switch_address &&
!meta.is_link_local_mcastv6
) {
// If this packet arrived on an Uplink port and it
// wasn't addressed to the switch or to an established
// NAT range, then drop it. This lets us forward traffic
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