local ~handle_ra ~now mac is a pair ctx, outs where ctx is a local IPv6 context associated to the hardware address mac. outs is a list of ethif packets to be sent.

add_ip ~now ctx ip is ctx', outs where ctx' is ctx updated with a new local ip and outs is a list of ethif packets to be sent.

get_ip ctx returns the list of local ips.

configured_ips ctx returns the list of local prefixes.

select_source ctx ip returns the ip that should be put in the source field of a packet destined to ip.

handle ~now ctx buf handles an incoming ipv6 packet. It returns ctx', bufs, evs where ctx' is the updated context, bufs is a list of packets to be sent and evs is a list of packets to be passed to the higher layers (udp, tcp, etc) for further processing.

send ~now ctx ?src dst proto size fillf starts route resolution and assembles an ipv6 packet of size for sending with header and body passed to fillf. It returns a pair ctx', dst_size_fills where ctx' is the updated context and dst, size, fillf is a list of packets to be sent, specified by destination, their size, and fill function.

tick ~now ctx should be called periodically (every 1s is good). It returns ctx', bufs where ctx' is the updated context and bufs is a list of packets to be sent.

add_prefix ~now ctx pfx adds a local prefix to ctx.

get_prefix ctx returns the list of local prefixes known to ctx.

add_routers ~now ctx ips adds a list of gateways to ctx to be used for routing.

get_routers ctx returns the list of gateways known to ctx.