lwip: add source ip based route for unicast packet
Add source IP based route for unicast packets forwarding.
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@ -142,7 +142,7 @@ ip4_route_src_hook(const ip4_addr_t *dest, const ip4_addr_t *src)
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struct netif *netif = NULL;
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/* destination IP is broadcast IP? */
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if ((src != NULL) && (dest->addr == IPADDR_BROADCAST)) {
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if ((src != NULL) && (!ip4_addr_isany(src) || (dest->addr == IPADDR_BROADCAST))) {
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/* iterate through netifs */
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for (netif = netif_list; netif != NULL; netif = netif->next) {
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/* is the netif up, does it have a link and a valid address? */
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