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dhclient: support supersede statement for option 54

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Submitted by: Fabian Kurtz <fabian.kurtz@udo.edu>
This commit is contained in:
Franco Fichtner 2017-03-24 08:22:27 +01:00
parent c1e3838d95
commit 14580e78e5
1 changed files with 13 additions and 4 deletions
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17
sbin/dhclient/dhclient.c
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@ -862,6 +862,8 @@ void
state_bound(void *ipp)
{
struct interface_info *ip = ipp;
u_int8_t *dp = NULL;
int len;
ASSERT_STATE(state, S_BOUND);
@ -869,10 +871,17 @@ state_bound(void *ipp)
make_request(ip, ip->client->active);
ip->client->xid = ip->client->packet.xid;
if (ip->client->active->options[DHO_DHCP_SERVER_IDENTIFIER].len == 4) {
memcpy(ip->client->destination.iabuf, ip->client->active->
options[DHO_DHCP_SERVER_IDENTIFIER].data, 4);
ip->client->destination.len = 4;
if (ip->client->config->default_actions[DHO_DHCP_SERVER_IDENTIFIER] ==
ACTION_SUPERSEDE) {
dp = ip->client->config->defaults[DHO_DHCP_SERVER_IDENTIFIER].data;
len = ip->client->config->defaults[DHO_DHCP_SERVER_IDENTIFIER].len;
} else {
dp = ip->client->active->options[DHO_DHCP_SERVER_IDENTIFIER].data;
len = ip->client->active->options[DHO_DHCP_SERVER_IDENTIFIER].len;
}
if (len == 4) {
memcpy(ip->client->destination.iabuf, dp, len);
ip->client->destination.len = len;
} else
ip->client->destination = iaddr_broadcast;