system/systemd
system/systemd
1
0
Fork 0
mirror of https://github.com/systemd/systemd synced 2024-07-22 10:44:58 +00:00
Code Issues Actions 5 Packages Projects Releases Wiki Activity

network/ndisc: drop onlink prefix when valid lifetime is zero

Browse source 
Replaces 155d7a2c04.
This commit is contained in:
Yu Watanabe 2024-04-12 04:38:42 +09:00
parent 9f368d9eb2
commit b263362254
1 changed files with 17 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
src/network/networkd-ndisc.c
View file

@ -1224,9 +1224,23 @@ static int ndisc_router_process_onlink_prefix(Link *link, sd_ndisc_router *rt) {
route->pref = preference;
route->lifetime_usec = lifetime_usec;
r = ndisc_request_router_route(route, link, rt);
if (r < 0)
return log_link_warning_errno(link, r, "Could not request prefix route: %m");
/* RFC 4861 section 6.3.4:
* - If the prefix is not already present in the Prefix List, and the Prefix Information option's
* Valid Lifetime field is non-zero, create a new entry for the prefix and initialize its
* invalidation timer to the Valid Lifetime value in the Prefix Information option.
*
* - If the prefix is already present in the host's Prefix List as the result of a previously
* received advertisement, reset its invalidation timer to the Valid Lifetime value in the Prefix
* Information option. If the new Lifetime value is zero, time-out the prefix immediately. */
if (lifetime_usec == 0) {
r = ndisc_remove_route(route, link);
if (r < 0)
return log_link_warning_errno(link, r, "Failed to remove prefix route: %m");
} else {
r = ndisc_request_router_route(route, link, rt);
if (r < 0)
return log_link_warning_errno(link, r, "Failed to request prefix route: %m");
}
return 0;
}