From 0314d58abefd76b44d4f191e90df2e7a2b09dacb Mon Sep 17 00:00:00 2001 From: Hans Dedecker Date: Wed, 2 Jan 2019 19:23:11 +0100 Subject: [PATCH] router: filter route information option Commit 750e457e3000187b85906814a2529ede24775325 added the capability to filter out prefixes in RAs; however routes were not filtered out based on the prefixes. This commit fixes this by taking into account the prefix_filter when constructing the RA route info option Signed-off-by: Hans Dedecker --- src/router.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) 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)); -- 2.25.1