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Re: [PATCH] Change MAC without bringing interface down

To: "David S. Miller" <davem@xxxxxxxxxx>
Subject: Re: [PATCH] Change MAC without bringing interface down
From: jamal <hadi@xxxxxxxxxx>
Date: 18 Aug 2003 09:03:54 -0400
Cc: tv@xxxxxxxxxx, netdev@xxxxxxxxxxx
In-reply-to: <20030818051227.4f35f2f3.davem@xxxxxxxxxx>
Organization: jamalopolis
References: <20030818091312.GA4889@lapdog> <20030818041911.358c3437.davem@xxxxxxxxxx> <1061208824.16010.2119.camel@xxxxxxxxxxxxxxxx> <20030818051227.4f35f2f3.davem@xxxxxxxxxx>
Reply-to: hadi@xxxxxxxxxx
Sender: netdev-bounce@xxxxxxxxxxx
This is fine by me. I 'll let Tommi take the lead on it unless he is too


On Mon, 2003-08-18 at 08:12, David S. Miller wrote:
> On 18 Aug 2003 08:13:44 -0400
> jamal <hadi@xxxxxxxxxx> wrote:
> > Editing the header may be the better approach if you have a few hundred 
> > hhs already inserted (this was the issue i was faced with when VRRP was
> > failing over when i was playing with it). I tried to flush the cache but
> > it took longer to recover it. 
> There is another reason I want the cache flushed.
> Those hh cache entries are what ARP resolved to when we
> had the previous MAC address, not the one we have now.
> The ARPs may come back differently with the new MAC
> address.
> I _REALLY REALLY_ don't want to have to change the
> ->update() implementations.  Although one thing I
> would consider is a new ->update_src() operation
> and if this were NULL we flush the entries instead.

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