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Update route.c to add interface name for link-local ipv6 addresses ev… #950

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Update route.c to add interface name for link-local ipv6 addresses ev… #950

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23 changes: 15 additions & 8 deletions src/openvpn/route.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1825,14 +1825,21 @@ add_route_ipv6(struct route_ipv6 *r6, const struct tuntap *tt, unsigned int flag
* but for link-local destinations, we MUST specify the interface, so
* we build a combined "$gateway%$interface" gateway string
*/
if (r6->iface != NULL && gateway_needed
&& IN6_IS_ADDR_LINKLOCAL(&r6->gateway)) /* fe80::...%intf */
{
size_t len = strlen(gateway) + 1 + strlen(r6->iface) + 1;
char *tmp = gc_malloc(len, true, &gc);
snprintf(tmp, len, "%s%%%s", gateway, r6->iface);
gateway = tmp;
}
if (IN6_IS_ADDR_LINKLOCAL(&r6->gateway)) { /* fe80::...%intf */

if (r6->iface != NULL && gateway_needed) {
size_t len = strlen(gateway) + 1 + strlen(r6->iface)+1;
char *tmp = gc_malloc( len, true, &gc );
snprintf( tmp, len, "%s%%%s", gateway, r6->iface );
gateway = tmp;

} else if (device) {
size_t len = strlen(gateway) + 1 + strlen(device)+1;
char *tmp = gc_malloc( len, true, &gc );
snprintf( tmp, len, "%s%%%s", gateway, device );
gateway = tmp;
}
}
#endif

#ifndef _WIN32
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