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authorRémi Denis-Courmont <rdenis@simphalempin.com>2005-06-13 15:01:34 -0700
committerDavid S. Miller <davem@davemloft.net>2005-06-13 15:01:34 -0700
commit77bd91967a97e5b94ae36113efe1d9e4f68a716e (patch)
tree269b466f7b8d6d3821ae6fedd8bf802c865b324b /net
parent84427d533076a08137779b3182a71c37bf000b27 (diff)
[IPv6] Don't generate temporary for TUN devices
Userland layer-2 tunneling devices allocated through the TUNTAP driver (drivers/net/tun.c) have a type of ARPHRD_NONE, and have no link-layer address. The kernel complains at regular interval when IPv6 Privacy extension are enabled because it can't find an hardware address : Dec 29 11:02:04 auguste kernel: __ipv6_regen_rndid(idev=cb3e0c00): cannot get EUI64 identifier; use random bytes. IPv6 Privacy extensions should probably be disabled on that sort of device. They won't work anyway. If userland wants a more usual Ethernet-ish interface with usual IPv6 autoconfiguration, it will use a TAP device with an emulated link-layer and a random hardware address rather than a TUN device. As far as I could fine, TUN virtual device from TUNTAP is the very only sort of device using ARPHRD_NONE as kernel device type. Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/addrconf.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 7744a259269..2720899d516 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -372,6 +372,7 @@ static struct inet6_dev * ipv6_add_dev(struct net_device *dev)
ndev->regen_timer.data = (unsigned long) ndev;
if ((dev->flags&IFF_LOOPBACK) ||
dev->type == ARPHRD_TUNNEL ||
+ dev->type == ARPHRD_NONE ||
dev->type == ARPHRD_SIT) {
printk(KERN_INFO
"Disabled Privacy Extensions on device %p(%s)\n",