https://coredns.io/tags/forward/ Recent content in forward on CoreDNS: DNS and Service Discovery Hugo -- gohugo.io en-us CoreDNS - All Rights Reserved Sat, 17 Jan 2026 06:17:00 +0000 https://coredns.io/plugins/forward/ Sat, 17 Jan 2026 06:17:00 +0000 https://coredns.io/plugins/forward/ Description The forward plugin re-uses already opened sockets to the upstreams. It supports UDP, TCP and DNS-over-TLS and uses in band health checking. When it detects an error a health check is performed. This checks runs in a loop, performing each check at a 0.5s interval for as long as the upstream reports unhealthy. Once healthy we stop health checking (until the next error). The health checks use a recursive DNS query (.