Re: [Bugme-new] [Bug 6610] New: dummy interface broadcast destination hardware address is not ff:ff:ff:ff:ff:ff
From: Herbert Xu [EMAIL PROTECTED] Date: Wed, 24 May 2006 11:10:54 +1000 David Miller [EMAIL PROTECTED] wrote: From: Andrew Morton [EMAIL PROTECTED] Date: Tue, 23 May 2006 16:31:42 -0700 Summary: dummy interface broadcast destination hardware address is not ff:ff:ff:ff:ff:ff Very strange because the dummy device driver calls ether_setup() which does: It's caused by the NO_ARP flag. Perhaps RTN_BROADCAST should take precedence over IFF_NOARP (but not IFF_LOOPBACK)? I'm talking about the code in net/ipv4/arp.c that causes this behavior. - To unsubscribe from this list: send the line unsubscribe netdev in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [Bugme-new] [Bug 6610] New: dummy interface broadcast destination hardware address is not ff:ff:ff:ff:ff:ff
On Thu, May 25, 2006 at 03:16:02PM -0700, David Miller wrote:
Perhaps RTN_BROADCAST should take precedence over IFF_NOARP
(but not IFF_LOOPBACK)? I'm talking about the code in
net/ipv4/arp.c that causes this behavior.
Sure, I don't see any harm in that.
However, I'm curious as to the purpose of all this. What application
is there for sending broadcasts through a dummy device with the
Ethernet broadcast address?
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmVHI~} [EMAIL PROTECTED]
Home Page: http://gondor.apana.org.au/~herbert/
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Re: [Bugme-new] [Bug 6610] New: dummy interface broadcast destination hardware address is not ff:ff:ff:ff:ff:ff
From: Herbert Xu [EMAIL PROTECTED] Date: Fri, 26 May 2006 10:43:24 +1000 On Thu, May 25, 2006 at 03:16:02PM -0700, David Miller wrote: Perhaps RTN_BROADCAST should take precedence over IFF_NOARP (but not IFF_LOOPBACK)? I'm talking about the code in net/ipv4/arp.c that causes this behavior. Sure, I don't see any harm in that. However, I'm curious as to the purpose of all this. What application is there for sending broadcasts through a dummy device with the Ethernet broadcast address? Good point. dummy is just a black hole to point routes to while your real connection is down. Running tcpdump on it and having any kind of expectations about broadcast addresses and whatnot is pointless. - To unsubscribe from this list: send the line unsubscribe netdev in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [Bugme-new] [Bug 6610] New: dummy interface broadcast destination hardware address is not ff:ff:ff:ff:ff:ff
From: Andrew Morton [EMAIL PROTECTED] Date: Tue, 23 May 2006 16:31:42 -0700 Summary: dummy interface broadcast destination hardware address is not ff:ff:ff:ff:ff:ff Very strange because the dummy device driver calls ether_setup() which does: memset(dev-broadcast,0xFF, ETH_ALEN); Probably tcpdump does not understand the link type, but that also doesn't make sense since clearly the ifconfig output shows Ethernet as the link encapsulation type. Stumped... - To unsubscribe from this list: send the line unsubscribe netdev in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [Bugme-new] [Bug 6610] New: dummy interface broadcast destination hardware address is not ff:ff:ff:ff:ff:ff
David Miller [EMAIL PROTECTED] wrote:
From: Andrew Morton [EMAIL PROTECTED]
Date: Tue, 23 May 2006 16:31:42 -0700
Summary: dummy interface broadcast destination hardware address
is not ff:ff:ff:ff:ff:ff
Very strange because the dummy device driver calls
ether_setup() which does:
It's caused by the NO_ARP flag.
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmVHI~} [EMAIL PROTECTED]
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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