-A ISTIO_OUTPUT -j ISTIO_REDIRECT
-A OUTPUT -p udp --dport 53 -m owner --uid-owner 1337 -j RETURN
-A OUTPUT -p udp --dport 53 -m owner --gid-owner 1337 -j RETURN
-A OUTPUT -p udp --dport 53 -j REDIRECT --to-port 15053
COMMIT
* raw
-A OUTPUT -p udp --dport 53 -m owner --uid-owner 1337 -j CT --zone 1
-A OUTPUT -p udp --sport 15053 -m owner --uid-owner 1337 -j CT --zone 2
-A OUTPUT -p udp --dport 53 -m owner --gid-owner 1337 -j CT --zone 1

iptables -t mangle -A ISTIO_OUTPUT -m connmark --mark 0x111/0xfff -j CONNMARK --restore-mark --nfmask 0xffffffff --ctmask 0xffffffff
iptables -t nat -A ISTIO_OUTPUT ! -o lo -p udp -m udp --dport 53 -j REDIRECT --to-port 15053
iptables -t nat -A ISTIO_OUTPUT -p tcp -m mark --mark 0x111/0xfff -j ACCEPT
iptables -t nat -A ISTIO_OUTPUT ! -d 127.0.0.1/32 -o lo -j ACCEPT

iptables -t mangle -A ISTIO_OUTPUT -m connmark --mark 0x111/0xfff -j CONNMARK --restore-mark --nfmask 0xffffffff --ctmask 0xffffffff
iptables -t nat -A ISTIO_OUTPUT ! -o lo -p udp -m udp --dport 53 -j REDIRECT --to-port 15053
iptables -t nat -A ISTIO_OUTPUT -p tcp -m mark --mark 0x111/0xfff -j ACCEPT
iptables -t nat -A ISTIO_OUTPUT ! -d 127.0.0.1/32 -o lo -j ACCEPT

  rbac: warning
  redis: warning
  router: warning
  runtime: warning
  stats: warning
  secret: warning
  tap: warning
  testing: warning
  thrift: warning
  tracing: warning
  upstream: warning
  udp: warning

   *
   * [rfc_7540_34]: https://tools.ietf.org/html/rfc7540.section-3.4
   */
  H2_PRIOR_KNOWLEDGE("h2_prior_knowledge"),

  /**
   * QUIC (Quick UDP Internet Connection) is a new multiplexed and secure transport atop UDP,
   * designed from the ground up and optimized for HTTP/2 semantics. HTTP/1.1 semantics are layered
   * on HTTP/2.
   *

# CL 149510043 net: disable SIO_UDP_CONNRESET behavior on windows., Ron Hashimoto <******@****.***>
pkg syscall (windows-386), const SIO_UDP_CONNRESET = 2550136844
pkg syscall (windows-386), const SIO_UDP_CONNRESET ideal-int
pkg syscall (windows-amd64), const SIO_UDP_CONNRESET = 2550136844
pkg syscall (windows-amd64), const SIO_UDP_CONNRESET ideal-int

  // * must start and end with an alphanumeric character.
  // Default is empty string.
  optional string name = 1;

  // protocol represents the IP protocol for this port.
  // Must be UDP, TCP, or SCTP.
  // Default is TCP.
  optional string protocol = 2;

  // port represents the port number of the endpoint.
  // If this is not specified, ports are not restricted and must be

  // * must start and end with an alphanumeric character.
  // Default is empty string.
  optional string name = 1;

  // protocol represents the IP protocol for this port.
  // Must be UDP, TCP, or SCTP.
  // Default is TCP.
  optional string protocol = 2;

  // port represents the port number of the endpoint.
  // If this is not specified, ports are not restricted and must be

message IngressPortStatus {
  // port is the port number of the ingress port.
  optional int32 port = 1;

  // protocol is the protocol of the ingress port.
  // The supported values are: "TCP", "UDP", "SCTP"
  optional string protocol = 2;

  // error is to record the problem with the service port
  // The format of the error shall comply with the following rules:

## Goals

Ztunnel should:
* **Not break users**. This means that deploying Ztunnel should retain all existing Kubernetes behavior.
  * This includes UDP, non-compliant HTTP, server-first protocols, stateful sets, external services, etc.
  * Explicitly opting into behavioral changes can be acceptable. For example, introducing Istio multi-cluster semantics.