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| author | Yu Watanabe <watanabe.yu+github@gmail.com> | 2021-12-28 22:42:03 +0900 |
|---|---|---|
| committer | Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl> | 2022-01-04 16:18:07 +0100 |
| commit | 1690672140f994bdce7c07ba26c372890f85060d (patch) | |
| tree | 0d12d5f4e45e47c022ef6fd588f0e4df470ea132 | |
| parent | 2a9efd85136e468f09d7fcccd494774f82ff005b (diff) | |
| download | systemd-1690672140f994bdce7c07ba26c372890f85060d.tar.gz | |
network: ndisc: ignore route prefix to ::/0
Fixes #21912.
(cherry picked from commit 80bfc3b901317ca7c1aaede0cd69150789a6e9be)
| -rw-r--r-- | src/network/networkd-ndisc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/network/networkd-ndisc.c b/src/network/networkd-ndisc.c index 32cb536ee5..f616f2c9bc 100644 --- a/src/network/networkd-ndisc.c +++ b/src/network/networkd-ndisc.c @@ -612,6 +612,11 @@ static int ndisc_router_process_route(Link *link, sd_ndisc_router *rt) { if (r < 0) return log_link_error_errno(link, r, "Failed to get route prefix length: %m"); + if (in6_addr_is_null(&dst) && prefixlen == 0) { + log_link_debug(link, "Route prefix is ::/0, ignoring"); + return 0; + } + if (in6_prefix_is_filtered(&dst, prefixlen, link->network->ndisc_allow_listed_route_prefix, link->network->ndisc_deny_listed_route_prefix)) { if (DEBUG_LOGGING) { _cleanup_free_ char *buf = NULL; |