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-rw-r--r--src/router.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/router.c b/src/router.c
index f8a83a6..c715757 100644
--- a/src/router.c
+++ b/src/router.c
@@ -597,7 +597,12 @@ static uint64_t send_router_advert(struct interface *iface, const struct in6_add
for (ssize_t i = 0; i < ipcnt; ++i) {
struct odhcpd_ipaddr *addr = &addrs[i];
if (addr->dprefix > 64 || addr->dprefix == 0 || addr->valid <= (uint32_t)now)
- continue; // Address not suitable
+ continue; /* Address not suitable */
+
+ if (odhcpd_bmemcmp(&addr->addr, &iface->pio_filter_addr,
+ iface->pio_filter_length) != 0 ||
+ addr->prefix < iface->pio_filter_length)
+ continue; /* RIO filtered out of this RA */
if (addr->dprefix > 32) {
addr->addr.in6.s6_addr32[1] &= htonl(~((1U << (64 - addr->dprefix)) - 1));