Date: Thu, 27 Aug 1998 23:25:55 +0200 From: Gary Jennejohn <garyj@muc.de> To: freebsd-isdn@FreeBSD.ORG Subject: sppp and NAT Message-ID: <199808272125.XAA00534@peedub.muc.de>
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would those of you who are using sppp and NAT please try out this patch ?
I hope that this will solve the problem of NAT not being informed when the
interface gets a new address. Please report back to the list with your
results.
I tested this out with sppp but without NAT. It seemed to work OK.
--------------------------
*** if_spppsubr.c.orig Tue Aug 25 23:02:24 1998
--- if_spppsubr.c Thu Aug 27 23:03:03 1998
***************
*** 56,61 ****
--- 56,62 ----
#include <net/if.h>
#include <net/netisr.h>
#include <net/if_types.h>
+ #include <net/route.h>
#include <machine/stdarg.h>
***************
*** 3914,3920 ****
static void
sppp_set_ip_addr(struct sppp *sp, u_long src)
{
! struct ifnet *ifp = &sp->pp_if;
struct ifaddr *ifa;
struct sockaddr_in *si;
--- 3915,3921 ----
static void
sppp_set_ip_addr(struct sppp *sp, u_long src)
{
! STDDCL;
struct ifaddr *ifa;
struct sockaddr_in *si;
***************
*** 3940,3947 ****
if (si)
break;
}
! if (ifa && si)
si->sin_addr.s_addr = htonl(src);
}
static int
--- 3941,3974 ----
if (si)
break;
}
! if (ifa && si) {
! /* delete the old address first XXX */
! if (debug)
! log(LOG_DEBUG, SPP_FMT "\ndeleting route1\n",
! SPP_ARGS(ifp));
! rtinit(ifa, (int)RTM_DELETE, 0);
si->sin_addr.s_addr = htonl(src);
+
+ /* seems like this is the place to modify any routing info */
+ /*
+ * XXXX
+ * BEWARE !! if the semantics for a dynamic
+ * address (IP == 0 || IP == 1) are changed, then this
+ * will *not* work anymore !!!!
+ */
+ if (src == 0) { /* deleting the address */
+ if (debug)
+ log(LOG_DEBUG, SPP_FMT "\ndeleting route2\n",
+ SPP_ARGS(ifp));
+ /* XXX RTF_HOST or 0 ?? */
+ rtinit(ifa, (int)RTM_DELETE, 0);
+ } else if (src && src != 1) { /* adding a new address */
+ if (debug)
+ log(LOG_DEBUG, SPP_FMT "adding route\n",
+ SPP_ARGS(ifp));
+ rtinit(ifa, (int)RTM_ADD, 0|RTF_UP);
+ }
+ }
}
static int
--------
Gary Jennejohn
Home - garyj@muc.de
Work - garyj@fkr.dec.com
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