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Re: [Openvpn-devel] [PATCH] Stick routes to interfaces for Linux


  • Subject: Re: [Openvpn-devel] [PATCH] Stick routes to interfaces for Linux
  • From: James Yonan <jim@xxxxxxxxx>
  • Date: Thu, 13 Apr 2006 14:33:00 -0600

Roy Marples wrote:
Hi List!

In some instances, Linux requires routes being stuck to interfaces instead of floating. Mainly in virtual environments like Xen and Qemu.

Attached is a patch that addresses this issue.

Thanks

------------------------------------------------------------------------

--- openvpn-2.0.6/route.c 2006-04-07 14:59:40.311648814 +0100
+++ openvpn-2.0.6/route.c 2006-04-07 14:57:28.860077986 +0100
@@ -685,18 +685,20 @@ add_route (struct route *r, const struct
#if defined(TARGET_LINUX)
#ifdef CONFIG_FEATURE_IPROUTE
- buf_printf (&buf, IPROUTE_PATH " route add %s/%d via %s",
+ buf_printf (&buf, IPROUTE_PATH " route add %s/%d via %s dev %s",
network,
count_netmask_bits(netmask),
- gateway);
+ gateway,
+ tt->actual_name);
if (r->metric_defined)
buf_printf (&buf, " metric %d", r->metric);
#else
- buf_printf (&buf, ROUTE_PATH " add -net %s netmask %s gw %s",
+ buf_printf (&buf, ROUTE_PATH " add -net %s netmask %s gw %s dev %s",
network,
netmask,
- gateway);
+ gateway,
+ tt->actual_name);
if (r->metric_defined)
buf_printf (&buf, " metric %d", r->metric);
#endif /*CONFIG_FEATURE_IPROUTE*/
@@ -792,7 +794,7 @@ add_route (struct route *r, const struct
buf_printf (&buf, " -rtt %d", r->metric);
#endif
- buf_printf (&buf, " -net %s %s -netmask %s",
+ buf_printf (&buf, " -net %s %s -netmask %s dev",
network,
gateway,
netmask);
@@ -830,14 +832,16 @@ delete_route (const struct route *r, con
#if defined(TARGET_LINUX)
#ifdef CONFIG_FEATURE_IPROUTE
- buf_printf (&buf, IPROUTE_PATH " route del %s/%d",
+ buf_printf (&buf, IPROUTE_PATH " route del %s/%d dev %s",
network,
- count_netmask_bits(netmask));
+ count_netmask_bits(netmask),
+ tt->actual_name);
#else
- buf_printf (&buf, ROUTE_PATH " del -net %s netmask %s",
+ buf_printf (&buf, ROUTE_PATH " del -net %s netmask %s dev %s",
network,
- netmask);
+ netmask,
+ tt->actual_name);
#endif /*CONFIG_FEATURE_IPROUTE*/
if (r->metric_defined)
buf_printf (&buf, " metric %d", r->metric);

Roy,

What about the case where you don't want to associate a route with the tun/tap interface, such as when you're doing the routing dance to make --redirect-gateway work?

James


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