mirror of
https://github.com/lwip-tcpip/lwip.git
synced 2024-11-04 23:29:25 +00:00
Fixed bug #31722: IP packets sent with an AutoIP source addr must be sent link-local
This commit is contained in:
parent
b49cf5e7a2
commit
f7627929d5
@ -233,6 +233,10 @@ HISTORY
|
||||
|
||||
++ Bugfixes:
|
||||
|
||||
2010-11-20: Simon Goldschmidt
|
||||
* etharp.c: Fixed bug #31722: IP packets sent with an AutoIP source addr
|
||||
must be sent link-local
|
||||
|
||||
2010-11-20: Simon Goldschmidt
|
||||
* timers.c: patch #7329: tcp_timer_needed prototype was ifdef'ed out for
|
||||
LWIP_TIMERS==0
|
||||
|
@ -871,14 +871,25 @@ etharp_output(struct netif *netif, struct pbuf *q, ip_addr_t *ipaddr)
|
||||
/* outside local network? */
|
||||
if (!ip_addr_netcmp(ipaddr, &(netif->ip_addr), &(netif->netmask)) &&
|
||||
!ip_addr_islinklocal(ipaddr)) {
|
||||
/* interface has default gateway? */
|
||||
if (!ip_addr_isany(&netif->gw)) {
|
||||
/* send to hardware address of default gateway IP address */
|
||||
ipaddr = &(netif->gw);
|
||||
/* no default gateway available */
|
||||
} else {
|
||||
/* no route to destination error (default gateway missing) */
|
||||
return ERR_RTE;
|
||||
#if LWIP_AUTOIP
|
||||
struct ip_hdr *iphdr = (struct ip_hdr*)((u8_t*)q->payload +
|
||||
sizeof(struct eth_hdr));
|
||||
/* According to RFC 3297, chapter 2.6.2 (Forwarding Rules), a packet with
|
||||
a link-local source address must always be "directly to its destination
|
||||
on the same physical link. The host MUST NOT send the packet to any
|
||||
router for forwarding". */
|
||||
if (!ip_addr_islinklocal(&iphdr->src))
|
||||
#endif /* LWIP_AUTOIP */
|
||||
{
|
||||
/* interface has default gateway? */
|
||||
if (!ip_addr_isany(&netif->gw)) {
|
||||
/* send to hardware address of default gateway IP address */
|
||||
ipaddr = &(netif->gw);
|
||||
/* no default gateway available */
|
||||
} else {
|
||||
/* no route to destination error (default gateway missing) */
|
||||
return ERR_RTE;
|
||||
}
|
||||
}
|
||||
}
|
||||
#if LWIP_NETIF_HWADDRHINT
|
||||
|
Loading…
Reference in New Issue
Block a user