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Don't autoconfigure address on RPL Root

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This commit is contained in:
Laurent Deru 2017-12-11 17:19:02 +01:00
parent 1549a55e42
commit 52f7e4a9f5
1 changed files with 10 additions and 8 deletions
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18
os/net/rpl-classic/rpl-dag.c
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@ -522,14 +522,16 @@ rpl_set_prefix(rpl_dag_t *dag, uip_ipaddr_t *prefix, unsigned len)
dag->prefix_info.length = len;
dag->prefix_info.flags = UIP_ND6_RA_FLAG_AUTONOMOUS;
PRINTF("RPL: Prefix set - will announce this in DIOs\n");
/* Autoconfigure an address if this node does not already have an address
with this prefix. Otherwise, update the prefix */
if(last_len == 0) {
PRINTF("rpl_set_prefix - prefix NULL\n");
check_prefix(NULL, &dag->prefix_info);
} else {
PRINTF("rpl_set_prefix - prefix NON-NULL\n");
check_prefix(&last_prefix, &dag->prefix_info);
if(dag->rank != ROOT_RANK(dag->instance)) {
/* Autoconfigure an address if this node does not already have an address
with this prefix. Otherwise, update the prefix */
if(last_len == 0) {
PRINTF("rpl_set_prefix - prefix NULL\n");
check_prefix(NULL, &dag->prefix_info);
} else {
PRINTF("rpl_set_prefix - prefix NON-NULL\n");
check_prefix(&last_prefix, &dag->prefix_info);
}
}
return 1;
}