[pkg-dhcp-devel] Bug#616290: [ISC-Bugs #24697] Patches solving build failure for GNU/Hurd

Samuel Thibault via RT dhcp-bugs at isc.org
Sat May 12 00:21:20 UTC 2012


Tomasz Mrugalski via RT, le Fri 11 May 2012 17:14:32 +0000, a écrit :
> On Fri May 11 02:28:09 2012, sthibault at debian.org wrote:
> > Any news on this? We really need to get some patch integrated in
> > Debian, either the one we proposed, as an interim, or something from
> > upstream, or something else?
> I'm sorry, but due to resource limitations, we were unable to include fix for
> realpath and use-sockets in upcoming 4.2.4. However, we were able to update the
> patch to a version that is almost ready for merge.

Cool!  That's what we really need actually.

> Please find our internal patch attached. That is *not* an official ISC patch.
> It did not go through our normal testing process. Feel free to use it, though.

Ok.  There is however just one remaining glitch: GNU/Hurd has neither
linux/filter.h nor net/bpf.h, so neither HAVE_LPF nor HAVE_BPF are
defined, but GNU/Hurd does have the SIOCGIFHWADDR ioctl.  I don't know
how you prefer how to handle that.  In the attached conservative patch,
we simply enable USE_LPF_HWADDR when __GNU__ is defined (i.e. GNU/Hurd).
Perhaps you'd prefer to replace that with an autoconf test for
SIOCGIFHWADDR.

I however hope that the attached thus-fixed use-sockets-realpath.patch
is OK for Debian, so we can at last get isc-dhcp to build.

For the record, the other patches that are needed for the Debian
package:

- patch-config enables the use of the socket API on GNU/Hurd, as
  explained by upstream in an earlier review mail.
- patch-bind has to be applied to the unpacked bind package (from bug
  #651001, now applied in the bind9 package).  I don't know how you'd
  prefer to achive that patching.
- dhclient-script.hurd, dhclient-script.hurd.udeb,
  rfc3442-classless-routes.hurd are to be put in debian/ to provide
  hurdish scripts.

You be they applied to the Debian package?

Thanks!
Samuel

-------------- next part --------------
Index: client/dhclient.c
===================================================================
RCS file: /proj/cvs/prod/DHCP/client/dhclient.c,v
retrieving revision 1.185
retrieving revision 1.185.4.1
diff -u -r1.185 -r1.185.4.1
--- a/client/dhclient.c	3 Feb 2012 22:47:42 -0000	1.185
+++ b/client/dhclient.c	28 Feb 2012 15:44:01 -0000	1.185.4.1
@@ -374,21 +374,17 @@
 	 * to be reopened after chdir() has been called
 	 */
 	if (path_dhclient_db[0] != '/') {
-		char *path = dmalloc(PATH_MAX, MDL);
-		if (path == NULL)
-			log_fatal("No memory for filename\n");
-		path_dhclient_db = realpath(path_dhclient_db, path);
+		const char *old_path = path_dhclient_db;
+		path_dhclient_db = realpath(path_dhclient_db, NULL);
 		if (path_dhclient_db == NULL)
-			log_fatal("%s: %s", path, strerror(errno));
+			log_fatal("Failed to get realpath for %s: %s", old_path, strerror(errno));
 	}
 
 	if (path_dhclient_script[0] != '/') {
-		char *path = dmalloc(PATH_MAX, MDL);
-		if (path == NULL)
-			log_fatal("No memory for filename\n");
-		path_dhclient_script = realpath(path_dhclient_script, path);
+		const char *old_path = path_dhclient_script;
+		path_dhclient_script = realpath(path_dhclient_script, NULL);
 		if (path_dhclient_script == NULL)
-			log_fatal("%s: %s", path, strerror(errno));
+			log_fatal("Failed to get realpath for %s: %s", old_path, strerror(errno));
 	}
 
 	/*
Index: common/bpf.c
===================================================================
RCS file: /proj/cvs/prod/DHCP/common/bpf.c,v
retrieving revision 1.62
retrieving revision 1.62.202.1
diff -u -r1.62 -r1.62.202.1
--- a/common/bpf.c	24 Nov 2009 02:06:56 -0000	1.62
+++ b/common/bpf.c	28 Feb 2012 15:15:18 -0000	1.62.202.1
@@ -550,7 +550,9 @@
 		interface_dereference (&fbi, MDL);
 	}
 }
+#endif
 
+#if defined(USE_BPF_RECEIVE) || defined(USE_BPF_HWADDR)
 void
 get_hw_addr(const char *name, struct hardware *hw) {
 	struct ifaddrs *ifa;
Index: common/lpf.c
===================================================================
RCS file: /proj/cvs/prod/DHCP/common/lpf.c,v
retrieving revision 1.41
retrieving revision 1.41.64.1
diff -u -r1.41 -r1.41.64.1
--- a/common/lpf.c	10 May 2011 14:27:56 -0000	1.41
+++ b/common/lpf.c	28 Feb 2012 15:15:18 -0000	1.41.64.1
@@ -28,7 +28,6 @@
 
 #include "dhcpd.h"
 #if defined (USE_LPF_SEND) || defined (USE_LPF_RECEIVE)
-#include <sys/ioctl.h>
 #include <sys/uio.h>
 #include <errno.h>
 
@@ -40,8 +39,14 @@
 #include "includes/netinet/ip.h"
 #include "includes/netinet/udp.h"
 #include "includes/netinet/if_ether.h"
+#endif
+
+#if defined (USE_LPF_RECEIVE) || defined (USE_LPF_HWADDR)
+#include <sys/ioctl.h>
 #include <net/if.h>
+#endif
 
+#if defined (USE_LPF_SEND) || defined (USE_LPF_RECEIVE)
 /* Reinitializes the specified interface after an address change.   This
    is not required for packet-filter APIs. */
 
@@ -417,7 +422,9 @@
 		interface_dereference (&fbi, MDL);
 	}
 }
+#endif
 
+#if defined (USE_LPF_RECEIVE) || defined (USE_LPF_HWADDR)
 void
 get_hw_addr(const char *name, struct hardware *hw) {
 	int sock;
Index: includes/osdep.h
===================================================================
RCS file: /proj/cvs/prod/DHCP/includes/osdep.h,v
retrieving revision 1.44
retrieving revision 1.44.122.1
diff -u -r1.44 -r1.44.122.1
--- a/includes/osdep.h	9 Sep 2010 22:18:02 -0000	1.44
+++ b/includes/osdep.h	28 Feb 2012 15:15:16 -0000	1.44.122.1
@@ -108,6 +108,10 @@
 #  define USE_SOCKET_RECEIVE
 #  if defined(HAVE_DLPI)
 #    define USE_DLPI_HWADDR
+#  elif defined(HAVE_LPF) || defined (__GNU__)
+#    define USE_LPF_HWADDR
+#  elif defined(HAVE_BPF)
+#    define USE_BPF_HWADDR
 #  endif
 #endif
 
Index: server/dhcpd.c
===================================================================
RCS file: /proj/cvs/prod/DHCP/server/dhcpd.c,v
retrieving revision 1.158
retrieving revision 1.158.76.1
diff -u -r1.158 -r1.158.76.1
--- a/server/dhcpd.c	21 Apr 2011 13:24:24 -0000	1.158
+++ b/server/dhcpd.c	28 Feb 2012 15:44:01 -0000	1.158.76.1
@@ -464,12 +464,11 @@
          * to be reopened after chdir() has been called
          */
         if (path_dhcpd_db[0] != '/') {
-                char *path = dmalloc(PATH_MAX, MDL);
-                if (path == NULL)
-                        log_fatal("No memory for filename\n");
-                path_dhcpd_db = realpath(path_dhcpd_db,  path);
+				const char *path = path_dhcpd_db;
+                path_dhcpd_db = realpath(path_dhcpd_db, NULL);
                 if (path_dhcpd_db == NULL)
-                        log_fatal("%s: %s", path, strerror(errno));
+                        log_fatal("Failed to get realpath for %s: %s", path, 
+                                   strerror(errno));
         }
 
 	if (!quiet) {
-------------- next part --------------
--- configure.in.orig	2011-12-04 23:21:32.000000000 +0100
+++ configure.in	2011-12-04 23:21:35.000000000 +0100
@@ -263,7 +263,7 @@
 	# as it breaks how the two halves (Basic and Advanced) of the IPv6
 	# Socket API were designed to be used but we have to live with it.
 	# Define _GNU_SOURCE to pull in the IPv6 Advanced Socket API.
-	*-linux* | *-kfreebsd*-gnu)
+	*-linux* | *-kfreebsd*-gnu | *-gnu*)
 		STD_CDEFINES="$STD_CDEFINES -D_GNU_SOURCE"
 		CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
 		;;
--- configure.orig	2011-12-04 23:25:28.000000000 +0100
+++ configure	2011-12-04 23:25:32.000000000 +0100
@@ -11807,7 +11807,7 @@
 	# as it breaks how the two halves (Basic and Advanced) of the IPv6
 	# Socket API were designed to be used but we have to live with it.
 	# Define _GNU_SOURCE to pull in the IPv6 Advanced Socket API.
-	*-linux* | *-kfreebsd*-gnu)
+	*-linux* | *-kfreebsd*-gnu | *-gnu*)
 		STD_CDEFINES="$STD_CDEFINES -D_GNU_SOURCE"
 		CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
 		;;
--- ./lib/isc/unix/net.c.orig	2011-12-04 23:44:51.000000000 +0100
+++ ./lib/isc/unix/net.c	2011-12-04 23:44:59.000000000 +0100
@@ -130,6 +130,9 @@
 #ifdef EAFNOSUPPORT
 		case EAFNOSUPPORT:
 #endif
+#ifdef EPFNOSUPPORT
+		case EPFNOSUPPORT:
+#endif
 #ifdef EPROTONOSUPPORT
 		case EPROTONOSUPPORT:
 #endif
-------------- next part --------------
--- debian/rules.orig	2012-05-12 01:15:07.000000000 +0000
+++ debian/rules	2012-05-12 01:15:49.000000000 +0000
@@ -35,12 +35,19 @@
 CFLAGS += -D_PATH_DHCLIENT_CONF='"/etc/dhcp/dhclient.conf"'
 CFLAGS += -DNOMINUM
 
+ifeq ($(DEB_HOST_ARCH_OS), hurd)
+CONFIG=--enable-use-sockets
+else
+CONFIG=
+endif
+
 build-ldap-stamp:
 	dh_testdir
 
 	./configure \
 		--prefix=$(DESTDIR)/usr \
 		--sysconfdir=$(DESTDIR)/etc/dhcp \
+		$(CONFIG) \
 		--with-srv-lease-file=/var/lib/dhcp/dhcpd.leases \
 		--with-srv6-lease-file=/var/lib/dhcp/dhcpd6.leases \
 		--with-cli-lease-file=/var/lib/dhcp/dhclient.leases \
@@ -69,6 +76,7 @@
 	./configure \
 		--prefix=$(DESTDIR)/usr \
 		--sysconfdir=$(DESTDIR)/etc/dhcp \
+		$(CONFIG) \
 		--with-srv-lease-file=/var/lib/dhcp/dhcpd.leases \
 		--with-srv6-lease-file=/var/lib/dhcp/dhcpd6.leases \
 		--with-cli-lease-file=/var/lib/dhcp/dhclient.leases \
-------------- next part --------------
#!/bin/bash

# dhclient-script for GNU, based on the script for Linux.
# Dan Halbert, March, 1997.
# Updated for Linux 2.[12] by Brian J. Murrell, January 1999.
# Modified for Debian.  Matt Zimmerman and Eloy Paris, December 2003
# Modified to remove useless tests for antiquated kernel versions that
# this doesn't even work with anyway, and introduces a dependency on /usr
# being mounted, which causes cosmetic errors on hosts that NFS mount /usr
# Andrew Pollock, February 2005
# Modified to work on point-to-point links. Andrew Pollock, June 2005
# Modified to support passing the parameters called with to the hooks. Andrew Pollock, November 2005
# Modified to work under GNU/Hurd for isc-dhcp-4.1.1 based on the
# patch by Samuel Thibault for dhcp3. Svante Signell, February 2011.

# The alias handling in here probably still sucks. -mdz

# update /etc/resolv.conf based on received values
make_resolv_conf() {
    local new_resolv_conf

    # DHCPv4
    if [ -n "$new_domain_search" ] || [ -n "$new_domain_name" ] ||
       [ -n "$new_domain_name_servers" ]; then
        new_resolv_conf=/etc/resolv.conf.dhclient-new
        rm -f $new_resolv_conf

        if [ -n "$new_domain_name" ]; then
            echo domain ${new_domain_name%% *} >>$new_resolv_conf
        fi

        if [ -n "$new_domain_search" ]; then
            if [ -n "$new_domain_name" ]; then
                domain_in_search_list=""
                for domain in $new_domain_search; do
                    if [ "$domain" = "${new_domain_name}" ] ||
                       [ "$domain" = "${new_domain_name}." ]; then
                        domain_in_search_list="Yes"
                    fi
                done
                if [ -z "$domain_in_search_list" ]; then
                            new_domain_search="$new_domain_name $new_domain_search"
                fi
            fi
            echo "search ${new_domain_search}" >> $new_resolv_conf
        elif [ -n "$new_domain_name" ]; then
                echo "search ${new_domain_name}" >> $new_resolv_conf
        fi

        if [ -n "$new_domain_name_servers" ]; then
                   for nameserver in $new_domain_name_servers; do
                       echo nameserver $nameserver >>$new_resolv_conf
            done
        else # keep 'old' nameservers
            sed -n /^\w*[Nn][Aa][Mm][Ee][Ss][Ee][Rr][Vv][Ee][Rr]/p /etc/resolv.conf >>$new_resolv_conf
        fi

        chown --reference=/etc/resolv.conf $new_resolv_conf
        chmod --reference=/etc/resolv.conf $new_resolv_conf
        mv -f $new_resolv_conf /etc/resolv.conf
    # DHCPv6
    elif [ -n "$new_dhcp6_domain_search" ] || [ -n "$new_dhcp6_name_servers" ]; then
        new_resolv_conf=/etc/resolv.conf.dhclient-new
        rm -f $new_resolv_conf

        if [ -n "$new_dhcp6_domain_search" ]; then
            echo "search ${new_dhcp6_domain_search}" >> $new_resolv_conf
        fi

        if [ -n "$new_dhcp6_name_servers" ]; then
            for nameserver in $new_dhcp6_name_servers; do
                echo nameserver $nameserver >>$new_resolv_conf
            done
        else # keep 'old' nameservers
            sed -n /^\w*[Nn][Aa][Mm][Ee][Ss][Ee][Rr][Vv][Ee][Rr]/p /etc/resolv.conf >>$new_resolv_conf
        fi

        chown --reference=/etc/resolv.conf $new_resolv_conf
        chmod --reference=/etc/resolv.conf $new_resolv_conf
        mv -f $new_resolv_conf /etc/resolv.conf
    fi
}

# run given script
run_hook() {
    local script
    local exit_status
    script="$1"
    shift        # discard the first argument, then the rest are the script's

    if [ -f $script ]; then
        . $script "$@"
    fi

    if [ -n "$exit_status" ] && [ "$exit_status" -ne 0 ]; then
        logger -p daemon.err "$script returned non-zero exit status $exit_status"
    fi

    return $exit_status
}

# run scripts in given directory
run_hookdir() {
    local dir
    local exit_status
    dir="$1"
    shift        # See run_hook

    if [ -d "$dir" ]; then
        for script in $(run-parts --list $dir); do
            run_hook $script "$@" || true
            exit_status=$?
        done
    fi

    return $exit_status
}

# Must be used on exit.   Invokes the local dhcp client exit hooks, if any.
exit_with_hooks() {
    exit_status=$1

    # Source the documented exit-hook script, if it exists
    if ! run_hook /etc/dhcp/dhclient-exit-hooks "$@"; then
        exit_status=$?
    fi

    # Now run scripts in the Debian-specific directory.
    if ! run_hookdir /etc/dhcp/dhclient-exit-hooks.d "$@"; then
        exit_status=$?
    fi

    exit $exit_status
}


# set up some variables for DHCPv4 handlers below
if [ -n "$new_broadcast_address" ]; then
    new_broadcast_arg="--broadcast $new_broadcast_address"
fi
if [ -n "$old_broadcast_address" ]; then
    old_broadcast_arg="--broadcast $old_broadcast_address"
fi
if [ -n "$new_subnet_mask" ]; then
    new_subnet_arg="--netmask $new_subnet_mask"
fi
if [ -n "$alias_subnet_mask" ]; then
    alias_subnet_arg="--netmask $alias_subnet_mask"
fi
# The 576 MTU is only used for X.25 and dialup connections
# where the admin wants low latency.  Such a low MTU can cause
# problems with UDP traffic, among other things.  As such,
# disallow MTUs from 576 and below by default, so that broken
# MTUs are ignored, but higher stuff is allowed (1492, 1500, etc).
if [ -z "$new_interface_mtu" ] || [ "$new_interface_mtu" -lt 576 ]; then
    new_interface_mtu=''
fi
if [ -n "$IF_METRIC" ]; then
    metric_arg="--metric $IF_METRIC"        # interfaces(5), "metric" option
fi


# The action starts here

# Invoke the local dhcp client enter hooks, if they exist.
run_hook /etc/dhcp/dhclient-enter-hooks
run_hookdir /etc/dhcp/dhclient-enter-hooks.d

# Execute the operation
case "$reason" in

    ### DHCPv4 Handlers

    MEDIUM|ARPCHECK|ARPSEND)
        # Do nothing
        ;;
    PREINIT)
        # The DHCP client is requesting that an interface be
        # configured as required in order to send packets prior to
        # receiving an actual address. - dhclient-script(8)

        # ensure interface is up
        # TODO: handle multiple interface case.
        settrans -afg /servers/socket/2 /hurd/pfinet -i ${interface}

        if [ -n "$alias_ip_address" ]; then
            # flush alias IP from interface
            # TODO
            :
            # ip -4 addr flush dev ${interface} label ${interface}:0
        fi

        ;;

    BOUND|RENEW|REBIND|REBOOT)
        if [ -n "$old_host_name" ] && [ -n "$new_host_name" ] &&
           [ "$old_host_name" != "$new_host_name" ]; then
            # hostname changed => set it
            hostname "$new_host_name"
        fi

        if [ -n "$old_ip_address" ] && [ -n "$alias_ip_address" ] &&
           [ "$alias_ip_address" != "$old_ip_address" ]; then
            # alias IP may have changed => flush it
	    # TODO
            :
            # ip -4 addr flush dev ${interface} label ${interface}:0
        fi

        if [ -n "$old_ip_address" ] &&
           [ "$old_ip_address" != "$new_ip_address" ]; then
            # leased IP has changed => flush it
            inetutils-ifconfig -i ${interface} -A 0.0.0.0
        fi

        if [ -z "$old_ip_address" ] ||
           [ "$old_ip_address" != "$new_ip_address" ] ||
           [ "$reason" = "BOUND" ] || [ "$reason" = "REBOOT" ]; then
            # new IP has been leased or leased IP changed => set it
            inetutils-ifconfig -i ${interface} -A ${new_ip_address} \
	        ${new_subnet_arg} ${new_broadcast_arg}

            if [ -n "$new_interface_mtu" ]; then
                # set MTU
                inetutils-ifconfig -i ${interface} --mtu ${new_interface_mtu}
            fi

            for router in $new_routers; do
                if [ "$new_subnet_mask" = "255.255.255.255" ]; then
                    # point-to-point connection => set explicit route
                    # TODO
		    :
                    #ip -4 route add ${router} dev $interface >/dev/null 2>&1
                fi

                # set default route
                fsysopts /servers/socket/2 $(fsysopts /servers/socket/2) -g ${router}
            done
        fi

        if [ -n "$alias_ip_address" ] &&
           [ "$new_ip_address" != "$alias_ip_address" ]; then
            # separate alias IP given, which may have changed
            # => flush it, set it & add host route to it
	    # TODO
	    :
            #ip -4 addr flush dev ${interface} label ${interface}:0
            #ip -4 addr add ${alias_ip_address}${alias_mask} \
            #    dev ${interface} label ${interface}:0
            #ip -4 route add ${alias_ip_address} dev ${interface} >/dev/null 2>&1
        fi

        # update /etc/resolv.conf
        make_resolv_conf

        ;;

    EXPIRE|FAIL|RELEASE|STOP)
        if [ -n "$alias_ip_address" ]; then
            # flush alias IP
            # TODO
            :
            #ip -4 addr flush dev ${interface} label ${interface}:0
        fi

        if [ -n "$old_ip_address" ]; then
            # flush leased IP
            inetutils-ifconfig -i ${interface} -A 0.0.0.0
        fi

        if [ -n "$alias_ip_address" ]; then
            # alias IP given => set it & add host route to it
            # TODO
            :
            #ip -4 addr add ${alias_ip_address}${alias_network_arg} \
            #    dev ${interface} label ${interface}:0
            #ip -4 route add ${alias_ip_address} dev ${interface} >/dev/null 2>&1
        fi

        ;;

    TIMEOUT)
        if [ -n "$alias_ip_address" ]; then
            # flush alias IP
            # TODO
            :
            #ip -4 addr flush dev ${interface} label ${interface}:0
        fi

        # set IP from recorded lease
        inetutils-ifconfig -i ${interface} -A ${new_ip_address} \
	    ${new_subnet_arg} ${new_broadcast_arg}

        if [ -n "$new_interface_mtu" ]; then
            # set MTU
            inetutils-ifconfig -i ${interface} --mtu ${new_interface_mtu}
        fi

        # if there is no router recorded in the lease or the 1st router answers pings
        if [ -z "$new_routers" ] || ping -q -c 1 "${new_routers%% *}"; then
            if [ -n "$alias_ip_address" ] &&
               [ "$new_ip_address" != "$alias_ip_address" ]; then
                # separate alias IP given => set up the alias IP & add host route to it
		# TODO
                :
                #ip -4 addr add ${alias_ip_address}${alias_mask} \
                #    dev ${interface} label ${interface}:0
                #ip -4 route add ${alias_ip_address} dev ${interface} >/dev/null 2>&1
            fi

            # set default route
            for router in $new_routers; do
                fsysopts /servers/socket/2 $(fsysopts /servers/socket/2) -g ${router}
            done

            # update /etc/resolv.conf
            make_resolv_conf
        else
            # flush all IPs from interface
            inetutils-ifconfig -i ${interface} -A 0.0.0.0
            exit_with_hooks 2 "$@"
        fi

        ;;
esac

exit_with_hooks 0
-------------- next part --------------
#!/bin/sh

set -e

# reduced dhclient-script for the Debian installer
# changes by Joshua Kwan <joshk at triplehelix.org>,
# Bastian Blank <waldi at debian.org>

# dhclient-script for Linux. Dan Halbert, March, 1997.
# Updated for Linux 2.[12] by Brian J. Murrell, January 1999.
# Modified for Debian.  Matt Zimmerman and Eloy Paris, December 2003
# Adapted the GNU/Linux script to GNU/Hurd, Svante Signell and Samuel Thibault,
# February 2011.

# update /etc/resolv.conf based on received values
make_resolv_conf() {
    local new_resolv_conf

    if [ -n "$new_domain_name" ] || [ -n "$new_domain_name_servers" ]; then
        new_resolv_conf=/etc/resolv.conf.dhclient-new
        rm -f $new_resolv_conf

        if [ -n "$new_domain_name" ]; then
            echo "search $new_domain_name" >>$new_resolv_conf
        fi

        for nameserver in $new_domain_name_servers; do
            echo "nameserver $nameserver" >>$new_resolv_conf
        done

        mv $new_resolv_conf /etc/resolv.conf
    fi
}

set_hostname() {
    local current_hostname
    current_hostname=$(hostname)

    if [ -z "$current_hostname" ] || [ "$current_hostname" = "(none)" ]; then
        hostname "$new_host_name"
    fi
}

# set up some variables for DHCP handlers below
if [ -n "$new_subnet_mask" ]; then
    new_subnet_arg="-m $new_subnet_mask"
fi

# Execute the operation
case "$reason" in
    MEDIUM|ARPCHECK|ARPSEND)
        # Do nothing
        ;;
    PREINIT)
        settrans -afg /servers/socket/2 /hurd/pfinet -i $interface

        # We need to give the kernel some time to get the interface up.
        sleep 1

        ;;

    BOUND|RENEW|REBIND|REBOOT)
        set_hostname
	pfinet_args="-i $interface"
        
        if [ -n "$old_ip_address" ] &&
             [ "$old_ip_address" != "$new_ip_address" ]; then
            # IP address changed. Bringing down the interface will delete all routes,
            # and clear the ARP cache.
            fsysopts /servers/socket/2 $pfinet_args
        fi

	# TODO: add MTU option to pfinet
	#if [ -n "$new_interface_mtu" ]; then
	#    pfinet_args="$pfinet_args --mtu $new_interface_mtu"
	#    fsysopts /servers/socket/2 $pfinet_args
	#fi

        if [ -z "$old_ip_address" ] ||
           [ "$old_ip_address" != "$new_ip_address" ] ||
            [ "$reason" = "BOUND" ] || [ "$reason" = "REBOOT" ]; then

	    pfinet_args="$pfinet_args -a $new_ip_address $new_subnet_arg"

            for router in $new_routers; do
               pfinet_args="$pfinet_args -g $router"
            done
	    fsysopts /servers/socket/2 $pfinet_args
        fi

        make_resolv_conf

        # Get the domain name into a file suitable for netcfg to read.
        printf "$new_domain_name" > /tmp/domain_name

        if [ -n "$new_ntp_servers" ]; then
            printf "$new_ntp_servers" > /tmp/dhcp-ntp-servers
        fi

        ;;

    EXPIRE|FAIL|RELEASE|STOP)
        if [ -n "$old_ip_address" ]; then
            # Shut down interface, which will delete routes and clear arp cache.
	    fsysopts /servers/socket/2 -i $interface
        fi

        ;;

    TIMEOUT)
	fsysopts /servers/socket/2 -i $interface

        ;;
esac

exit 0
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