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Fix corner case with dhcp timeouts

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If t1 >= t2 timeout then only t2 timer should be scheduled. This can happen
when a sub 1 minute lease is received.
This commit is contained in:
Henrik Persson 2012-09-05 14:16:45 +02:00 committed by goldsimon
parent 7072bc3203
commit b4ac36337f
1 changed files with 5 additions and 0 deletions
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5
src/core/dhcp.c
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@ -960,6 +960,11 @@ dhcp_bind(struct netif *netif)
LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_STATE, ("dhcp_bind(): set request timeout %"U32_F" msecs\n", dhcp->offered_t2_rebind*1000));
}
/* If we have sub 1 minute lease, t2 and t1 will kick in at the same time. */
if (dhcp->t1_timeout >= dhcp->t2_timeout && dhcp->t2_timeout > 0) {
dhcp->t1_timeout = 0;
}
if (dhcp->subnet_mask_given) {
/* copy offered network mask */
ip_addr_copy(sn_mask, dhcp->offered_sn_mask);