IPv6 netif: documentation ammendment

7 years ago · c96c5dda24
1 changed files with 3 additions and 0 deletions
--- a/sys/include/net/gnrc/ipv6/netif.h
+++ b/sys/include/net/gnrc/ipv6/netif.h
@ -479,6 +479,9 @@ ipv6_addr_t *gnrc_ipv6_netif_find_addr(kernel_pid_t pid, const ipv6_addr_t *addr
 *          interfaces.
 *
 * @param[out] out      The reference to the found address on the interface.
+ *                      Must be a pointer to NULL on calling and may stay
+ *                      unchanged if no match can be found.
+ *
 * @param[in] prefix    The prefix you want to search for.
 *
 * @return  The PID to the interface the address is registered to.