Commit 6b3ae80a authored by YOSHIFUJI Hideaki's avatar YOSHIFUJI Hideaki

[IPV6]: Don't select a tentative address as a source address.

A tentative address is not considered "assigned to an interface"
in the traditional sense (RFC2462 Section 4).
Don't try to select such an address for the source address.
Signed-off-by: default avatarYOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
parent c5e33bdd
......@@ -908,11 +908,18 @@ int ipv6_dev_get_saddr(struct net_device *daddr_dev,
score.addr_type = __ipv6_addr_type(&ifa->addr);
/* Rule 0: Candidate Source Address (section 4)
/* Rule 0:
* - Tentative Address (RFC2462 section 5.4)
* - A tentative address is not considered
* "assigned to an interface" in the traditional
* sense.
* - Candidate Source Address (section 4)
* - In any case, anycast addresses, multicast
* addresses, and the unspecified address MUST
* NOT be included in a candidate set.
*/
if (ifa->flags & IFA_F_TENTATIVE)
continue;
if (unlikely(score.addr_type == IPV6_ADDR_ANY ||
score.addr_type & IPV6_ADDR_MULTICAST)) {
LIMIT_NETDEBUG(KERN_DEBUG
......
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