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SoftwareOctober 20, 2026, 14:29

Docker 29.8+ breaks Swarm containers reaching their own node's ports under ufw

On Docker 29.8.0 and later, a container on a Swarm overlay network times out when connecting to an ingress-published port on the same node with ufw set to deny incoming. The connection now passes through the host's INPUT chain and docker-proxy instead of being DNATed; the same test passed on 29.7.2.

Docker 29.8+ breaks Swarm containers reaching their own node's ports under ufw
#Docker
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