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authorDavid Gibson <david@gibson.dropbear.id.au>2012-02-24 01:23:28 +0100
committerJan Kiszka <jan.kiszka@siemens.com>2012-02-27 14:55:07 +0100
commit90d7416ab13113ccd3891435eea8715c5f503460 (patch)
treec1ef264562f2606ffaaef7bef1e8252810ecbe27 /hw/multiboot.h
parentb87ffa163185e339f9f9f1e6dbc561e0f990442d (diff)
slirp: Fix assertion failure on rejected DHCP requests
The guest network stack might DHCPREQUEST an address that the slirp built in dhcp server can't let it have - for example if the guest has an old leases file from another network configuration. In this case the dhcp server should and does reject the request and prepares to send a DHCPNAK to the client. However, in this case the daddr variable in bootp_reply() is set to 0.0.0.0. Shortly afterwards, it unconditionally attempts to pre-insert the new client address into the ARP table. This causes an assertion failure in arp_address_add() because of the 0.0.0.0 address. According to RFC2131, DHCPNAK messages for clients on the same subnet must be sent to the broadcast address (S3.2, subpoint 2). Cc: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Diffstat (limited to 'hw/multiboot.h')
0 files changed, 0 insertions, 0 deletions