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| author | Zhenlei Huang <zlei.huang@gmail.com> | 2021-05-22 21:53:52 +0000 |
|---|---|---|
| committer | Lutz Donnerhacke <donner@FreeBSD.org> | 2021-05-22 22:01:37 +0000 |
| commit | 03b0505b8fe848f33f2f38fe89dd5538908c847e (patch) | |
| tree | 31ea6fbea3b96c9e6684c6528e87a02a0eb9beb4 /sys/netinet/ip_input.c | |
| parent | 3f7e14ad93454476bb11b4b8de5b41930d13312e (diff) | |
| download | src-03b0505b8fe848f33f2f38fe89dd5538908c847e.tar.gz src-03b0505b8fe848f33f2f38fe89dd5538908c847e.zip | |
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
Diffstat (limited to 'sys/netinet/ip_input.c')
| -rw-r--r-- | sys/netinet/ip_input.c | 7 |
1 files 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); |