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Commit 9af28511 authored by Sascha Hlusiak's avatar Sascha Hlusiak Committed by David S. Miller
Browse files

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: default avatarSascha Hlusiak <contact@saschahlusiak.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4b279601

net/ipv6/addrconf.c

+2 −0
Original line number Diff line number Diff line
@@ -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) ||