Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>
Co-authored-by: Diana Deac <diana.deac@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

DAOs can have more than one target and transit information option.
Previously, we only the last target and transit information option was
handled correclty.

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Use SequenceCounter in a parsed RPL packet.

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

When not hearing from the parent for a long time, we decide to get out
of the DODAG. We should set `ctx.rpl.dodag` to `None` and reset the
expiration of the DIS messages such that they are again transmitted
every minute.

When not using RPL or when we are not part of any DODAG, then we should
not unwrap the DODAG to find a next hop.

Don't unwrap the DODAG when looking for the parent address when looking
for the next address.

Add a function to get the length of the extension header header (without
the payload).

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Use the DIS source address as the destination address instead of the DIS
destination address when responding on a unicast DIS message.

Use the DIO source address as the destination address instead of the DIO
destination address when responding on a optionless DIO message.

Remove `as_sixlowpan_next_header` from IpPayload and use it with
IpProtocol instead.

Resetting the trickle timer when selecting a new parent makes sure that
we send a DIO before we transmit a DAO. This makes sure that all
surrounding nodes have a neighbor cache entry. Otherwise, when
transmitting a DAO before a DIO, a packet might forward it to the root
(in MOP1). The ACK would travel downward using a source routing header.
When there is no entry in the neighbor cache, the intermediate node
sends it back to its parent.

…f the DTSN

Adding an entry to the neighbor table is very strict and only happens
when we transmit an ARP request or an NDISC request. This now adds
entries in the neighbor table when the destination address is unicast,
in the same network, with a hop limit of 255 or 64 (meaning that the
chance that it is a neighbor is high). We also add it when the
destination address is the ALL_NODES or ALL_RPL_NODES address, as these
packets should not be forwarded.

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>

We now use an intermediate representation of an 6LoWPAN compressed
packet. This way we implement `buffer_len` and `emit` functions, making
its usage more similar to the other packet types.

Compress IpPayload::Raw when it contains a UDP packet.

Signed-off-by: Thibaut Vandervelden <thvdveld@vub.be>