20 lines
717 B
Markdown
20 lines
717 B
Markdown
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lwIP NAT componenent
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If you want to use lwIP NAT componenent, please define LWIP_USING_NAT in rtconfig.h.
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In this case the network 213.129.231.168/29 is nat'ed when packets are sent to the
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destination network 10.0.0.0/24 (untypical example - most users will have the other
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way around).
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Use following code to add a NAT entry:
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ip_nat_entry_t nat_entry;
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nat_entry.out_if = (struct netif *)&emac_if1;
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nat_entry.in_if = (struct netif *)&emac_if2;
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IP4_ADDR(&nat_entry.source_net, 213, 129, 231, 168);
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IP4_ADDR(&nat_entry.source_netmask, 255, 255, 255, 248);
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IP4_ADDR(&nat_entry.dest_net, 10, 0, 0, 0);
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IP4_ADDR(&nat_entry.source_netmask, 255, 0, 0, 0);
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ip_nat_add(&_nat_entry);
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