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| author | Sascha Hlusiak <contact@saschahlusiak.de> | 2009-05-19 16:56:51 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-05-20 03:02:02 +0400 |
| commit | 9af28511be10e175eb0cabb2ba5cfafe77408d84 (patch) | |
| tree | 82ba3e85243a0eeb754cf549e628656ac25d9da6 | |
| parent | 4b2796017487f3c1e423b8e1ada6c94c0a8ea815 (diff) | |
| download | linux-9af28511be10e175eb0cabb2ba5cfafe77408d84.tar.xz | |
addrconf: refuse isatap eui64 for INADDR_ANY
A tunnel with no local ipv4 endpoint would otherwise use the
ISATAP linklocal address fe80::5efe:0:0, which is invalid. Rather not
add a linklocal address at all.
Signed-off-by: Sascha Hlusiak <contact@saschahlusiak.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv6/addrconf.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 9eb61c7cae57..31938e5fb220 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -1520,6 +1520,8 @@ static int addrconf_ifid_infiniband(u8 *eui, struct net_device *dev) int __ipv6_isatap_ifid(u8 *eui, __be32 addr) { + if (addr == 0) + return -1; eui[0] = (ipv4_is_zeronet(addr) || ipv4_is_private_10(addr) || ipv4_is_loopback(addr) || ipv4_is_linklocal_169(addr) || ipv4_is_private_172(addr) || ipv4_is_test_192(addr) || |