Add dhcp timeout parameter

pkg/netconf/netconf_linux.go

@@ -6,6 +6,7 @@ import (
 	"net"
 	"os"
 	"os/exec"
+	"strconv"
 	"strings"
 	"sync"
 	"syscall"
@@ -290,6 +291,10 @@ func runDhcp(netCfg *NetworkConfig, iface string, argstr string, setHostname, se
 		args = append(args, "--nohook", "resolv.conf")
 	}
 
+	if netCfg.DHCPTimeout > 0 {
+		args = append(args, "--timeout", strconv.Itoa(netCfg.DHCPTimeout))
+	}
+
 	// Wait for lease
 	// TODO: this should be optional - based on kernel arg?
 	args = append(args, "-w", "--debug")