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netif_set_addr(): when removing an address (setting address to ANY), we have to remove it *before* changing netmask/gw to ensure that tcp RST segment can be sent correctly

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sg 2016-07-19 22:34:22 +02:00
parent 24a339a609
commit 97b8e88e69
1 changed files with 12 additions and 4 deletions
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16
src/core/netif.c
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@ -305,10 +305,18 @@ void
netif_set_addr(struct netif *netif, const ip4_addr_t *ipaddr, const ip4_addr_t *netmask,
const ip4_addr_t *gw)
{
netif_set_netmask(netif, netmask);
netif_set_gw(netif, gw);
/* set ipaddr last to ensure netmask/gw have been set when status callback is called */
netif_set_ipaddr(netif, ipaddr);
if (ip4_addr_isany(ipaddr)) {
/* when removing an address, we have to remove it *before* changing netmask/gw
to ensure that tcp RST segment can be sent correctly */
netif_set_ipaddr(netif, ipaddr);
netif_set_netmask(netif, netmask);
netif_set_gw(netif, gw);
} else {
netif_set_netmask(netif, netmask);
netif_set_gw(netif, gw);
/* set ipaddr last to ensure netmask/gw have been set when status callback is called */
netif_set_ipaddr(netif, ipaddr);
}
}
#endif /* LWIP_IPV4*/