libndp: apply filter to raw socket to only accept ND messages
libndp: move ndp_sock_{open,close}() after msg parsing functions
ndptool: Fix compilation on musl libc
- libndb: reject redirect and router advertisements from non-link-local
- libndp: validate the IPv6 hop limit
- libndp: revert API change for ndp_msg_send() and add ndp_msg_send_with_flags()
- libndp: fix type of field "na" in "struct ndp_msgna"
- ndptool: add option to send messages types
- libndp: add option flags to send messages
- Add SubmittingPatches howto