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Don't copy more than necessary.

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This commit is contained in:
Guus Sliepen 2003-03-29 21:58:35 +00:00
parent 7d21a8d1c7
commit c3ad3731a8
1 changed files with 5 additions and 7 deletions
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12
src/route.c
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@ -17,7 +17,7 @@
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
$Id: route.c,v 1.1.2.47 2003/03/29 21:51:21 guus Exp $
$Id: route.c,v 1.1.2.48 2003/03/29 21:58:35 guus Exp $
*/
#include "config.h"
@ -295,8 +295,8 @@ void route_ipv6_unreachable(vpn_packet_t *packet, uint8_t code)
/* Remember original source and destination */
memcpy(&pseudo.ip6_src, &hdr->ip6_src, 16);
memcpy(&pseudo.ip6_dst, &hdr->ip6_dst, 16);
memcpy(&pseudo.ip6_src, &hdr->ip6_dst, 16);
memcpy(&pseudo.ip6_dst, &hdr->ip6_src, 16);
pseudo.length = ntohs(hdr->ip6_plen) + sizeof(*hdr);
if(pseudo.length >= IP_MSS - sizeof(*hdr) - sizeof(*icmp))
@ -312,8 +312,8 @@ void route_ipv6_unreachable(vpn_packet_t *packet, uint8_t code)
hdr->ip6_plen = htons(sizeof(*icmp) + pseudo.length);
hdr->ip6_nxt = IPPROTO_ICMPV6;
hdr->ip6_hlim = 255;
memcpy(&hdr->ip6_dst, &pseudo.ip6_src, 16);
memcpy(&hdr->ip6_src, &pseudo.ip6_dst, 16);
memcpy(&hdr->ip6_dst, &pseudo.ip6_dst, 16);
memcpy(&hdr->ip6_src, &pseudo.ip6_src, 16);
/* Fill in ICMP header */
@ -323,8 +323,6 @@ void route_ipv6_unreachable(vpn_packet_t *packet, uint8_t code)
/* Create pseudo header */
memcpy(&pseudo.ip6_src, &hdr->ip6_src, 16);
memcpy(&pseudo.ip6_dst, &hdr->ip6_dst, 16);
pseudo.length = htonl(sizeof(*icmp) + pseudo.length);
pseudo.next = htonl(IPPROTO_ICMPV6);