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ndisc: Also set link hoplimit

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The per route hop limit does not place the hop limit in the IPv6 header.
https://github.com/systemd/systemd/issues/28437#issuecomment-1711055181
This commit is contained in:
Susant Sahani 2023-09-08 14:30:38 +05:30 committed by Daan De Meyer
parent c8cb548f0b
commit 0ba8374bb8
3 changed files with 8 additions and 2 deletions
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7
src/network/networkd-ndisc.c
View File

@ -199,7 +199,12 @@ static int ndisc_request_route(Route *in, Link *link, sd_ndisc_router *rt) {
r = sd_ndisc_router_get_hop_limit(rt, &hop_limit);
if (r < 0 && r != -ENODATA)
return log_link_warning_errno(link, r, "Failed to get default router hop limit from RA: %m");
}
link->network->ipv6_hop_limit = hop_limit;
r = link_set_ipv6_hop_limit(link);
if (r < 0)
log_link_warning_errno(link, r, "Cannot set IPv6 hop limit for interface, ignoring: %m");
}
route->source = NETWORK_CONFIG_SOURCE_NDISC;
route->provider.in6 = router;

2
src/network/networkd-sysctl.c
View File

@ -165,7 +165,7 @@ static int link_set_ipv6_dad_transmits(Link *link) {
return sysctl_write_ip_property_int(AF_INET6, link->ifname, "dad_transmits", link->network->ipv6_dad_transmits);
}
static int link_set_ipv6_hop_limit(Link *link) {
int link_set_ipv6_hop_limit(Link *link) {
assert(link);
/* Make this a NOP if IPv6 is not available */

1
src/network/networkd-sysctl.h
View File

@ -28,6 +28,7 @@ typedef enum IPReversePathFilter {
int link_set_sysctl(Link *link);
int link_set_ipv6_mtu(Link *link);
int link_set_ipv6_hop_limit(Link *link);
const char* ipv6_privacy_extensions_to_string(IPv6PrivacyExtensions i) _const_;
IPv6PrivacyExtensions ipv6_privacy_extensions_from_string(const char *s) _pure_;