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addrconf: refuse isatap eui64 for INADDR_ANY

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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>
This commit is contained in:
Sascha Hlusiak 2009-05-19 12:56:51 +00:00 committed by David S. Miller
parent 4b27960174
commit 9af28511be
1 changed files with 2 additions and 0 deletions
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2
net/ipv6/addrconf.c
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@ -1520,6 +1520,8 @@ static int addrconf_ifid_infiniband(u8 *eui, struct net_device *dev)
int __ipv6_isatap_ifid(u8 *eui, __be32 addr) int __ipv6_isatap_ifid(u8 *eui, __be32 addr)
{ {
if (addr == 0)
return -1;
eui[0] = (ipv4_is_zeronet(addr) || ipv4_is_private_10(addr) || eui[0] = (ipv4_is_zeronet(addr) || ipv4_is_private_10(addr) ||
ipv4_is_loopback(addr) || ipv4_is_linklocal_169(addr) || ipv4_is_loopback(addr) || ipv4_is_linklocal_169(addr) ||
ipv4_is_private_172(addr) || ipv4_is_test_192(addr) || ipv4_is_private_172(addr) || ipv4_is_test_192(addr) ||