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subsys: net: ip: ipv6_nbr: p2p link: NA without link address option #97258

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Merged
merged 1 commit into from
Oct 13, 2025
+6 −2
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subsys: net: ip: ipv6_nbr: p2p link: NA without link address option #97258

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8 changes: 6 additions & 2 deletions subsys/net/ip/ipv6_nbr.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1703,6 +1703,7 @@ static inline bool handle_na_neighbor(struct net_pkt *pkt,
struct net_linkaddr *cached_lladdr;
struct net_pkt *pending;
struct net_nbr *nbr;
bool point_to_point = net_if_flag_is_set(net_pkt_iface(pkt), NET_IF_POINTOPOINT);

net_ipv6_nbr_lock();

Expand Down Expand Up @@ -1733,7 +1734,10 @@ static inline bool handle_na_neighbor(struct net_pkt *pkt,
if (nbr->idx == NET_NBR_LLADDR_UNKNOWN) {
struct net_linkaddr nbr_lladdr;

if (!tllao_offset) {
/* RFC 7066, ch 2.2:
* for point-to-point interfaces the target link layer address is not required.
*/
if (!tllao_offset && !point_to_point) {
NET_DBG("No target link layer address.");
goto err;
}
Expand Down Expand Up @@ -1765,7 +1769,7 @@ static inline bool handle_na_neighbor(struct net_pkt *pkt,

/* Update the cached address if we do not yet known it */
if (net_ipv6_nbr_data(nbr)->state == NET_IPV6_NBR_STATE_INCOMPLETE) {
if (!tllao_offset) {
if (!tllao_offset && !point_to_point) {
goto err;
}

Expand Down