[Bugme-new] [Bug 4239] New: ARP sent with wrong MAC address
bugme-daemon at osdl.org
bugme-daemon at osdl.org
Tue Feb 22 07:31:58 PST 2005
http://bugme.osdl.org/show_bug.cgi?id=4239
Summary: ARP sent with wrong MAC address
Kernel Version: 2.6.10
Status: NEW
Severity: normal
Owner: acme at conectiva.com.br
Submitter: agulati at nextone.com
Distribution:
Hardware Environment: P4
Software Environment: 2.6.10
Problem Description: Turning ARP OFF and sending something out from that
interface creates a NOARP entry in the ARP table which does not go away when you
turn ARP back ON.
ip link set eth0 arp off
ping -I eth0 1.1.1.1 (creates ARP entry with own MAC address --
1.1.1.1 dev eth0 lladdr <eth0's MAC address> nud noarp)
This entry in arp table with 'nud noarp', stays there even after turning ARP on.
ip link set eth0 arp on
And ping 1.1.1.1 doesn't work after that since it considers that 'nud noarp'
entry as valid and doesn't send ARP request but sends an ICMP request to its own
MAC address!
Shouldn't that entry be removed after enabling ARP on eth0?
If not, is there a way to remove that entry (I tried 'ip -statistics neigh flush
dev eth0 nud noarp', but that goes in a loop)
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