diff options
| -rw-r--r-- | ndp.c | 21 |
1 files changed, 4 insertions, 17 deletions
@@ -47,6 +47,7 @@ */ int ndp(struct ctx *c, const struct icmp6hdr *ih, const struct in6_addr *saddr) { + const struct in6_addr *rsaddr; /* src addr for reply */ char buf[BUFSIZ] = { 0 }; struct ipv6hdr *ip6hr; struct icmp6hdr *ihr; @@ -180,26 +181,12 @@ dns_done: else c->ip6.addr_seen = *saddr; - ip6hr->daddr = *saddr; if (IN6_IS_ADDR_LINKLOCAL(&c->ip6.gw)) - ip6hr->saddr = c->ip6.gw; + rsaddr = &c->ip6.gw; else - ip6hr->saddr = c->ip6.addr_ll; + rsaddr = &c->ip6.addr_ll; - ip6hr->payload_len = htons(sizeof(*ihr) + len); - csum_icmp6(ihr, &ip6hr->saddr, &ip6hr->daddr, ihr + 1, len); - - ip6hr->version = 6; - ip6hr->nexthdr = IPPROTO_ICMPV6; - ip6hr->hop_limit = 255; - - len += sizeof(*ehr) + sizeof(*ip6hr) + sizeof(*ihr); - memcpy(ehr->h_dest, c->mac_guest, ETH_ALEN); - memcpy(ehr->h_source, c->mac, ETH_ALEN); - ehr->h_proto = htons(ETH_P_IPV6); - - if (tap_send(c, ehr, len) < 0) - perror("NDP: send"); + tap_icmp6_send(c, rsaddr, saddr, ihr, len + sizeof(*ihr)); return 1; } |