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sd-radv: reset timer on sending unsolicited RA

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Addresses https://github.com/systemd/systemd/pull/32267#discussion_r1567078807.
This commit is contained in:
Yu Watanabe 2024-04-16 19:00:15 +09:00
parent 16e4dce6e8
commit 2a1e890943
1 changed files with 5 additions and 3 deletions
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8
src/libsystemd-network/sd-radv.c
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@ -279,11 +279,13 @@ static int radv_process_packet(sd_radv *ra, ICMP6Packet *packet) {
if (r < 0)
return r;
struct in6_addr src = {};
struct in6_addr src;
r = sd_ndisc_router_solicit_get_sender_address(rs, &src);
if (r < 0 && r != -ENODATA) /* null address is allowed */
if (r == -ENODATA) /* null address is allowed */
return sd_radv_send(ra); /* When an unsolicited RA, we need to also update timer. */
if (r < 0)
return log_radv_errno(ra, r, "Failed to get sender address of RS, ignoring: %m");
if (r >= 0 && in6_addr_equal(&src, &ra->ipv6ll))
if (in6_addr_equal(&src, &ra->ipv6ll))
/* This should be definitely caused by a misconfiguration. If we send RA to ourself, the
* kernel complains about that. Let's ignore the packet. */
return log_radv_errno(ra, SYNTHETIC_ERRNO(EADDRINUSE), "Received RS from the same interface, ignoring.");