The branch main has been updated by donner:
URL:
https://cgit.FreeBSD.org/src/commit/?id=03b0505b8fe848f33f2f38fe89dd5538908c847e
commit 03b0505b8fe848f33f2f38fe89dd5538908c847e
Author: Zhenlei Huang <zlei.hu...@gmail.com>
AuthorDate: 2021-05-22 21:53:52 +0000
Commit: Lutz Donnerhacke <don...@freebsd.org>
CommitDate: 2021-05-22 22:01:37 +0000
ip_forward: Restore RFC reference
Add RFC reference lost in 3d846e48227e2e78c1e7b35145f57353ffda56ba
PR: 255388
Reviewed By: rgrimes, donner, karels, marcus, emaste
MFC after: 27 days
Differential Revision: https://reviews.freebsd.org/D30374
---
sys/netinet/ip_input.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/sys/netinet/ip_input.c b/sys/netinet/ip_input.c
index 1139e3a5abfa..733cc2901879 100644
--- a/sys/netinet/ip_input.c
+++ b/sys/netinet/ip_input.c
@@ -740,7 +740,10 @@ passin:
}
if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) {
MROUTER_RLOCK();
- /* Do not forward packets from IN_LINKLOCAL. */
+ /*
+ * RFC 3927 2.7: Do not forward multicast packets from
+ * IN_LINKLOCAL.
+ */
if (V_ip_mrouter && !IN_LINKLOCAL(ntohl(ip->ip_src.s_addr))) {
/*
* If we are acting as a multicast router, all
@@ -780,7 +783,7 @@ passin:
goto ours;
if (ip->ip_dst.s_addr == INADDR_ANY)
goto ours;
- /* Do not forward packets to or from IN_LINKLOCAL. */
+ /* RFC 3927 2.7: Do not forward packets to or from IN_LINKLOCAL. */
if (IN_LINKLOCAL(ntohl(ip->ip_dst.s_addr)) ||
IN_LINKLOCAL(ntohl(ip->ip_src.s_addr))) {
IPSTAT_INC(ips_cantforward);
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