Re: [Users] Kernel panic with latest 2.6.24 from git
On Monday 09 June 2008 14:35:36 Dietmar Maurer wrote: Just compiled latest 2.6.24 from git. I consistently get a kernel Panic when i stop a CT (ipv6 related) - someone else observing that? Yes, and this is already fixed in, again, current git. :-) VE: let -ve_netns live a bit more VE: let -ve_netns live a bit more ___ Users mailing list Users@openvz.org https://openvz.org/mailman/listinfo/users
Re: [Users] Veth mac generation
and yes and no.
These upper 3 bytes are reserved for our company, so selecting them you
will never conflict with other devices in network infrastructure.
i.e. the worst what can happen 2 veths will conflict.
On the other hand - you are right, 6 bytes are better :)
Kirill
Dietmar Maurer wrote:
Hi all,
The code to generate mac addresses for veth (generate_mac in veth.c)
uses the
Constant SW_OUI for upper 3 bytes, and random values for lower 3 bytes.
Thus
giving 2^24 possible values.
Isn't it better to use random numbers for all 6 bytes, like the code
in the linux kernel:
static inline void random_ether_addr(u8 *addr)
{
get_random_bytes (addr, ETH_ALEN);
addr [0] = 0xfe; /* clear multicast bit */
addr [0] |= 0x02; /* set local assignment bit (IEEE802) */
}
That would make conflict less likely.
- Dietmar
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AW: [Users] Veth mac generation
Why I asked is because of that bridge problem: http://forum.openvz.org/index.php?t=msgth=5291#msg_26576 A bridge always select the lowest mac address. This patch solves the problem, but i am not sure if there are side effects. https://lists.linux-foundation.org/pipermail/bridge/2008-June/005895.html The SWSOFT OID is quite 'low', so the problem occurs frequently. - Dietmar -Ursprüngliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Kirill Korotaev Gesendet: Mittwoch, 11. Juni 2008 15:47 An: users@openvz.org Betreff: Re: [Users] Veth mac generation and yes and no. These upper 3 bytes are reserved for our company, so selecting them you will never conflict with other devices in network infrastructure. i.e. the worst what can happen 2 veths will conflict. On the other hand - you are right, 6 bytes are better :) ___ Users mailing list Users@openvz.org https://openvz.org/mailman/listinfo/users
