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Fix bug #46837 Don't send dhcp_release message in dhcp_release function

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This commit is contained in:
Dirk Ziegelmeier 2016-01-13 08:54:54 +01:00
parent 40ff62fa60
commit 123c8dbd6a
1 changed files with 5 additions and 1 deletions
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6
src/core/ipv4/dhcp.c
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@ -1205,12 +1205,16 @@ dhcp_release(struct netif *netif)
struct dhcp *dhcp = netif->dhcp;
err_t result;
ip_addr_t server_ip_addr;
u8_t is_dhcp_supplied_address;
LWIP_DEBUGF(DHCP_DEBUG | LWIP_DBG_TRACE, ("dhcp_release()\n"));
if (dhcp == NULL) {
return ERR_ARG;
}
ip_addr_copy(server_ip_addr, dhcp->server_ip_addr);
is_dhcp_supplied_address = dhcp_supplied_address(netif);
/* idle DHCP client */
dhcp_set_state(dhcp, DHCP_STATE_OFF);
/* clean old DHCP offer */
@ -1224,7 +1228,7 @@ dhcp_release(struct netif *netif)
dhcp->offered_t0_lease = dhcp->offered_t1_renew = dhcp->offered_t2_rebind = 0;
dhcp->t1_renew_time = dhcp->t2_rebind_time = dhcp->lease_used = dhcp->t0_timeout = 0;
if (!dhcp_supplied_address(netif)) {
if (!is_dhcp_supplied_address) {
/* don't issue release message when address is not dhcp-assigned */
return ERR_OK;
}