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6lowpan nd: tentative NCE is like no NCE

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This commit is contained in:
Oleg Hahm 2015-09-17 12:45:56 +02:00
parent 4afecc9a87
commit d8824bd0c5
1 changed files with 5 additions and 3 deletions
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8
sys/net/gnrc/network_layer/sixlowpan/nd/gnrc_sixlowpan_nd.c
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@ -170,9 +170,11 @@ kernel_pid_t gnrc_sixlowpan_nd_next_hop_l2addr(uint8_t *l2addr, uint8_t *l2addr_
/* get if not gotten from previous check */
nc_entry = gnrc_ipv6_nc_get(iface, next_hop);
}
/* If a NCE for this destination exist, we can use even for link-local
* addresses. This should be only the case for 6LBRs. */
if ((ipv6_addr_is_link_local(next_hop)) && (nc_entry == NULL)) {
/* If a (non-tentative) NCE for this destination exist, we can use even for
* link-local addresses. This should be only the case for 6LBRs. */
if ((ipv6_addr_is_link_local(next_hop)) &&
((nc_entry == NULL) ||
(gnrc_ipv6_nc_get_type(nc_entry) == GNRC_IPV6_NC_TYPE_TENTATIVE))) {
/* in case of a border router there is no sensible way for address resolution
* if the interface is not given */
#ifdef MODULE_GNRC_SIXLOWPAN_ND_BORDER_ROUTER