d/freebsd-skq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ip_forward: Restore RFC reference

Browse Source 
Add RFC reference lost in 3d846e4822

PR:		255388
Reviewed By:	rgrimes, donner, karels, marcus, emaste
MFC after:	27 days
Differential Revision: https://reviews.freebsd.org/D30374
This commit is contained in:
Zhenlei Huang 2021-05-22 23:53:52 +02:00 committed by Lutz Donnerhacke
parent 3f7e14ad93
commit 03b0505b8f
1 changed files with 5 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
sys/netinet/ip_input.c
View File

@ -740,7 +740,10 @@ ip_input(struct mbuf *m)
} }
if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) { if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) {
MROUTER_RLOCK(); 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 (V_ip_mrouter && !IN_LINKLOCAL(ntohl(ip->ip_src.s_addr))) {
/* /*
* If we are acting as a multicast router, all * If we are acting as a multicast router, all
@ -780,7 +783,7 @@ ip_input(struct mbuf *m)
goto ours; goto ours;
if (ip->ip_dst.s_addr == INADDR_ANY) if (ip->ip_dst.s_addr == INADDR_ANY)
goto ours; 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)) || if (IN_LINKLOCAL(ntohl(ip->ip_dst.s_addr)) ||
IN_LINKLOCAL(ntohl(ip->ip_src.s_addr))) { IN_LINKLOCAL(ntohl(ip->ip_src.s_addr))) {
IPSTAT_INC(ips_cantforward); IPSTAT_INC(ips_cantforward);