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IPv6 use interface when sending to link-local dest

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This commit is contained in:
Prosper Van
2021-07-21 09:47:18 -07:00
parent f46dee9f19
commit a619e4ff98
2 changed files with 9 additions and 2 deletions
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7
src/ipv6.cpp
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@@ -366,11 +366,16 @@ void IPv6::write_serialization(uint8_t* buffer, uint32_t total_sz) {
}
#ifndef BSD
void IPv6::send(PacketSender& sender, const NetworkInterface &) {
void IPv6::send(PacketSender& sender, const NetworkInterface& interface) {
sockaddr_in6 link_addr;
const PacketSender::SocketType type = PacketSender::IPV6_SOCKET;
link_addr.sin6_family = AF_INET6;
link_addr.sin6_port = 0;
// Required to set sin6_scope_id to interface index as stated in RFC2553.
// https://datatracker.ietf.org/doc/html/rfc2553#section-3.3
if (IPv6Address(header_.dst_addr).is_local_unicast()) {
link_addr.sin6_scope_id = interface.id();
}
memcpy((uint8_t*)&link_addr.sin6_addr, header_.dst_addr, address_type::address_size);
sender.send_l3(*this, (struct sockaddr*)&link_addr, sizeof(link_addr), type);
}