# IPv6 implementation description

## Implementation issues
- [Done] HBH processed by default and limited to IOAM. Risk of DOS attack
- Disable MLD by default
- Disable sending RA by default
- Add more states in ND
- Move TTL check. Currently don't before locally received packets.
- Drop forwarding of packets with invalid source (::, ::1)
- Handle link-local addresses in applications, e.g. ping. Ensure packets are not forwarded outside of zone
- Use the flow label and 3 tuple ECMP by default
- Add source dependent routing support