Add DHCPv6 functionality.

[l2tpns.git] / ppp.c

diff --git a/ppp.c b/ppp.c
index e786c16..3a045ce 100644 (file)
--- a/ppp.c
+++ b/ppp.c
@@ -5,6 +5,8 @@
 #include <unistd.h>
 #include <errno.h>
 #include <stdlib.h>
+#include <netinet/ip6.h>
+#include "dhcp6.h"
 #include "l2tpns.h"
 #include "constants.h"
 #include "plugin.h"
@@ -1483,6 +1485,13 @@ static void ipv6cp_open(sessionidt s, tunnelidt t)
        if (session[s].ipv6prefixlen)
                route6set(s, session[s].ipv6route, session[s].ipv6prefixlen, 1);
 
+       if (session[s].ipv6address.s6_addr[0])
+       {
+               // Check if included in prefix
+               if (sessionbyipv6(session[s].ipv6address) != s)
+                       route6set(s, session[s].ipv6address, 128, 1);
+       }
+
        // Send an initial RA (TODO: Should we send these regularly?)
        send_ipv6_ra(s, t, NULL);
 }
@@ -2260,6 +2269,16 @@ void processipv6in(sessionidt s, tunnelidt t, uint8_t *p, uint16_t l)
                return;
        }
 
+       // Check if DhcpV6, IP dst: FF02::1:2, Src Port 0x0222 (546), Dst Port 0x0223 (547)
+       if (*(p + 6) == 17 && *(p + 24) == 0xFF && *(p + 25) == 2 &&
+                       *(uint32_t *)(p + 26) == 0 && *(uint32_t *)(p + 30) == 0 &&
+                       *(uint16_t *)(p + 34) == 0 && *(p + 36) == 0 && *(p + 37) == 1 && *(p + 38) == 0 && *(p + 39) == 2 &&
+                       *(p + 40) == 2 && *(p + 41) == 0x22 && *(p + 42) == 2 && *(p + 43) == 0x23)
+       {
+               dhcpv6_process(s, t, p, l);
+               return;
+       }
+
        // Add on the tun header
        p -= 4;
        *(uint32_t *) p = htonl(PKTIPV6);