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authorNicolas Dichtel <nicolas.dichtel@6wind.com>2012-10-01 23:19:14 +0000
committerDavid S. Miller <davem@davemloft.net>2012-10-02 22:36:23 -0400
commit62b54dd91567686a1cb118f76a72d5f4764a86dd (patch)
tree26ea17178e66c20f77ffc599e1bc1e803664dc07 /net/ipv6
parentffb5ba90017505a19e238e986e6d33f09e4df765 (diff)
ipv6: don't add link local route when there is no link local address
When an address is added on loopback (ip -6 a a 2002::1/128 dev lo), a route to fe80::/64 is added in the main table: unreachable fe80::/64 dev lo proto kernel metric 256 error -101 This route does not match any prefix (no fe80:: address on lo). In fact, addrconf_dev_config() will not add link local address because this function filters interfaces by type. If the link local address is added manually, the route to the link local prefix will be automatically added by addrconf_add_linklocal(). Note also, that this route is not deleted when the address is removed. After looking at the code, it seems that addrconf_add_lroute() is redundant with addrconf_add_linklocal(), because this function will add the link local route when the link local address is configured. Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/addrconf.c15
1 files changed, 2 insertions, 13 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 480e68422efb..d7c56f8a5b4e 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1769,14 +1769,6 @@ static void sit_route_add(struct net_device *dev)
}
#endif
-static void addrconf_add_lroute(struct net_device *dev)
-{
- struct in6_addr addr;
-
- ipv6_addr_set(&addr, htonl(0xFE800000), 0, 0, 0);
- addrconf_prefix_route(&addr, 64, dev, 0, 0);
-}
-
static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
{
struct inet6_dev *idev;
@@ -1794,8 +1786,6 @@ static struct inet6_dev *addrconf_add_dev(struct net_device *dev)
if (!(dev->flags & IFF_LOOPBACK))
addrconf_add_mroute(dev);
- /* Add link local route */
- addrconf_add_lroute(dev);
return idev;
}
@@ -2474,10 +2464,9 @@ static void addrconf_sit_config(struct net_device *dev)
sit_add_v4_addrs(idev);
- if (dev->flags&IFF_POINTOPOINT) {
+ if (dev->flags&IFF_POINTOPOINT)
addrconf_add_mroute(dev);
- addrconf_add_lroute(dev);
- } else
+ else
sit_route_add(dev);
}
#endif