IPv4 policy routing (and the ip command) allows to add a routing rule
with 'local' type, however this did not work with IPv6. This
patch implements the 'local' routing type by redirecting all such packets
to the local IP stack.
Signed-off-by: Balazs Scheidler <bazsi@xxxxxxxxxx>
---
net/ipv6/route.c | 6 +++++-
1 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 1473ee0..9491579 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1174,6 +1174,8 @@ int ip6_route_add(struct fib6_config *cfg)
if (addr_type & IPV6_ADDR_MULTICAST)
rt->u.dst.input = ip6_mc_input;
+ else if (cfg->fc_flags & RTF_LOCAL)
+ rt->u.dst.input = ip6_input;
else
rt->u.dst.input = ip6_forward;
@@ -1195,7 +1197,7 @@ int ip6_route_add(struct fib6_config *cfg)
they would result in kernel looping; promote them to reject routes
*/
if ((cfg->fc_flags & RTF_REJECT) ||
- (dev && (dev->flags&IFF_LOOPBACK) && !(addr_type&IPV6_ADDR_LOOPBACK))) {
+ (((cfg->fc_flags & RTF_LOCAL) == 0) && (dev && (dev->flags&IFF_LOOPBACK) && !(addr_type&IPV6_ADDR_LOOPBACK)))) {
/* hold loopback dev/idev if we haven't done so. */
if (dev != net->loopback_dev) {
if (dev) {
@@ -2086,6 +2088,8 @@ static int rtm_to_fib6_config(struct sk_buff *skb, struct nlmsghdr *nlh,
if (rtm->rtm_type == RTN_UNREACHABLE)
cfg->fc_flags |= RTF_REJECT;
+ else if (rtm->rtm_type == RTN_LOCAL)
+ cfg->fc_flags |= RTF_LOCAL;
cfg->fc_nlinfo.pid = NETLINK_CB(skb).pid;
cfg->fc_nlinfo.nlh = nlh;
--
1.6.0.4
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