refactor(vmm): remove built-in port forwarding

Signed-off-by: Kevin Wang <wy721@qq.com>

Author: kvinwang

docs/bridge-networking.md

@@ -90,13 +90,6 @@ sudo sysctl -p /etc/sysctl.d/99-dstack-bridge.conf
 sudo apt install -y dnsmasq
 ```
 
-Install the DHCP notification script (notifies VMM when a VM gets an IP so port forwarding can be established):
-
-```bash
-sudo cp dstack/scripts/dhcp-notify.sh /usr/local/bin/dhcp-notify.sh
-sudo chmod +x /usr/local/bin/dhcp-notify.sh
-```
-
 Create dnsmasq config:
 
 ```ini
@@ -106,11 +99,8 @@ bind-interfaces
 dhcp-range=10.0.100.10,10.0.100.254,255.255.255.0,12h
 dhcp-option=option:router,10.0.100.1
 dhcp-option=option:dns-server,8.8.8.8,1.1.1.1
-dhcp-script=/usr/local/bin/dhcp-notify.sh
 ```
 
-The `dhcp-script` option tells dnsmasq to call the notification script on every lease event. The script sends the MAC and IP to VMM's `ReportDhcpLease` RPC, which triggers automatic port forwarding for the VM.
-
 ```bash
 sudo systemctl restart dnsmasq
 ```
@@ -172,8 +162,7 @@ sudo chmod u+s /usr/lib/qemu/qemu-bridge-helper
 - VMM passes `-netdev bridge,id=net0,br=<bridge>` to QEMU
 - QEMU's bridge helper (setuid) creates a TAP device and attaches it to the bridge
 - Guest MAC address is derived from SHA256 of the VM ID, with an optional configurable prefix (stable across restarts for DHCP IP consistency)
-- The host DHCP server (dnsmasq) assigns an IP and calls `dhcp-notify.sh`, which notifies VMM via the `ReportDhcpLease` RPC
-- VMM matches the MAC address to identify the VM and establishes port forwarding rules
+- The host DHCP server (dnsmasq) assigns an IP to the VM
 - When QEMU exits, the TAP device is automatically destroyed
 - VMM does not need root or `CAP_NET_ADMIN`
 

dstack/Cargo.lock

@@ -61,7 +61,6 @@ members = [
     "dstack-mr/cli",
     "verifier",
     "size-parser",
-    "port-forward",
     "crates/dstack-cli-core",
     "crates/dstack-cli",
     "crates/dstackup",
@@ -78,7 +77,6 @@ dstack-kms-rpc = { path = "kms/rpc" }
 dstack-guest-agent-rpc = { path = "guest-agent/rpc" }
 dstack-vmm-rpc = { path = "vmm/rpc" }
 dstack-cli-core = { path = "crates/dstack-cli-core" }
-dstack-port-forward = { path = "port-forward" }
 cc-eventlog = { path = "cc-eventlog" }
 supervisor = { path = "supervisor" }
 supervisor-client = { path = "supervisor/client" }

dstack/Cargo.toml

@@ -352,7 +352,6 @@ mode = "user"
 net = "10.0.2.0/24"
 dhcp_start = "10.0.2.10"
 restrict = false
-forward_service_enabled = false
 
 [cvm.port_mapping]
 enabled = true