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Diffstat (limited to 'ndp.c')
-rw-r--r--ndp.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/ndp.c b/ndp.c
index b676825..74445ad 100644
--- a/ndp.c
+++ b/ndp.c
@@ -64,6 +64,9 @@ int ndp(struct ctx *c, struct ethhdr *eh, size_t len)
ih->icmp6_type < RS || ih->icmp6_type > NA)
return 0;
+ if (c->no_ndp)
+ return 1;
+
ehr = (struct ethhdr *)buf;
ip6hr = (struct ipv6hdr *)(ehr + 1);
ihr = (struct icmp6hdr *)(ip6hr + 1);
@@ -91,6 +94,9 @@ int ndp(struct ctx *c, struct ethhdr *eh, size_t len)
size_t len = 0;
int i, n;
+ if (c->no_ra)
+ return 1;
+
info("NDP: received RS, sending RA");
ihr->icmp6_type = RA;
ihr->icmp6_code = 0;
@@ -110,6 +116,14 @@ int ndp(struct ctx *c, struct ethhdr *eh, size_t len)
memcpy(p, &c->addr6, 8); /* prefix */
p += 16;
+ if (c->mtu) {
+ *p++ = 5; /* type */
+ *p++ = 1; /* length */
+ p += 2; /* reserved */
+ *(uint32_t *)p = htonl(c->mtu); /* MTU */
+ p += 4;
+ }
+
for (n = 0; !IN6_IS_ADDR_UNSPECIFIED(&c->dns6[n]); n++);
if (n) {
*p++ = 25; /* RDNSS */