Chore/update#2
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Add a UDP DNS relay (pkg/net/dns_forwarder.go) that intercepts guest DNS queries (redirected via an nftables DNAT rule on UDP/53) and forwards them to the configured upstream resolvers on the host network. The guest receives real DNS answers, matching how the macOS path handles DNS via gVisor's UDP forwarder (pkg/net/stack_darwin.go handleDNS). The transparent proxy still sees every hostname via Host header (HTTP) or SNI (HTTPS) because the nftables TCP DNAT rules intercept all port 80/443 traffic regardless of destination IP. An nftables rule in the prerouting chain redirects UDP/53 from the guest TAP to the forwarder's ephemeral port on the gateway IP. New: pkg/net/dns_forwarder.go, pkg/net/dns_forwarder_test.go Modified: pkg/net/nftables.go (DNS DNAT rule + SetDNSForwarderPort)
Signed-off-by: Jingkai He <jingkai@hey.com>
Signed-off-by: Jingkai He <jingkai@hey.com>
Signed-off-by: Jingkai He <jingkai@hey.com>
Signed-off-by: Jingkai He <jingkai@hey.com>
Linux dns forwarding
Signed-off-by: Jingkai He <jingkai@hey.com>
Signed-off-by: Jingkai He <jingkai@hey.com>
Signed-off-by: Jingkai He <jingkai@hey.com>
…pdate usage notes Signed-off-by: Jingkai He <jingkai@hey.com>
Signed-off-by: Jingkai He <jingkai@hey.com>
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