Add app that responds to IPv6 neighbor solicitations
Add app that responds to IPv6 neighbor solicitations

The app provides the bare minimum needed for address resolution of
remote hosts on the same subnet.  It filters out NS for a single
pre-defined IPv6 target address and responds with a NA that provides a
pre-defined link-layer address.

alexandergall/snabbswitch,andywingo/snabbswitch,mixflowtech/logsensor,kbara/snabb,hb9cwp/snabbswitch,eugeneia/snabb,fhanik/snabbswitch,javierguerragiraldez/snabbswitch,plajjan/snabbswitch,alexandergall/snabbswitch,kellabyte/snabbswitch,heryii/snabb,eugeneia/snabbswitch,snabbco/snabb,dwdm/snabbswitch,alexandergall/snabbswitch,virtualopensystems/snabbswitch,lukego/snabb,alexandergall/snabbswitch,xdel/snabbswitch,pirate/snabbswitch,eugeneia/snabb,eugeneia/snabbswitch,dwdm/snabbswitch,dpino/snabbswitch,lukego/snabbswitch,dpino/snabbswitch,kellabyte/snabbswitch,aperezdc/snabbswitch,eugeneia/snabbswitch,pavel-odintsov/snabbswitch,Igalia/snabbswitch,eugeneia/snabb,dpino/snabbswitch,aperezdc/snabbswitch,Igalia/snabb,dpino/snabb,javierguerragiraldez/snabbswitch,hb9cwp/snabbswitch,heryii/snabb,mixflowtech/logsensor,eugeneia/snabb,lukego/snabb,kbara/snabb,lukego/snabbswitch,andywingo/snabbswitch,dpino/snabb,wingo/snabb,virtualopensystems/snabbswitch,lukego/snabbswitch,kbara/snabb,eugeneia/snabbswitch,SnabbCo/snabbswitch,aperezdc/snabbswitch,justincormack/snabbswitch,xdel/snabbswitch,virtualopensystems/snabbswitch,aperezdc/snabbswitch,dpino/snabb,snabbco/snabb,justincormack/snabbswitch,dpino/snabbswitch,kbara/snabb,wingo/snabb,wingo/snabb,heryii/snabb,heryii/snabb,plajjan/snabbswitch,kbara/snabb,snabbnfv-goodies/snabbswitch,kbara/snabb,SnabbCo/snabbswitch,snabbco/snabb,wingo/snabbswitch,dpino/snabb,Igalia/snabb,SnabbCo/snabbswitch,snabbco/snabb,snabbnfv-goodies/snabbswitch,javierguerragiraldez/snabbswitch,eugeneia/snabb,wingo/snabb,eugeneia/snabb,xdel/snabbswitch,andywingo/snabbswitch,dpino/snabb,wingo/snabb,heryii/snabb,fhanik/snabbswitch,SnabbCo/snabbswitch,Igalia/snabb,Igalia/snabb,Igalia/snabbswitch,plajjan/snabbswitch,wingo/snabbswitch,dpino/snabb,pavel-odintsov/snabbswitch,hb9cwp/snabbswitch,hb9cwp/snabbswitch,Igalia/snabb,snabbco/snabb,lukego/snabb,plajjan/snabbswitch,Igalia/snabbswitch,lukego/snabb,Igalia/snabbswitch,pavel-odintsov/snabbswitch,mixflowtech/logsensor,justincormack/snabbswitch,wingo/snabb,mixflowtech/logsensor,eugeneia/snabb,dwdm/snabbswitch,Igalia/snabb,andywingo/snabbswitch,Igalia/snabb,alexandergall/snabbswitch,mixflowtech/logsensor,Igalia/snabbswitch,snabbco/snabb,alexandergall/snabbswitch,wingo/snabbswitch,heryii/snabb,alexandergall/snabbswitch,alexandergall/snabbswitch,lukego/snabbswitch,Igalia/snabb,snabbnfv-goodies/snabbswitch,kellabyte/snabbswitch,snabbco/snabb,wingo/snabbswitch,pirate/snabbswitch,fhanik/snabbswitch,dpino/snabb,pirate/snabbswitch,snabbnfv-goodies/snabbswitch,justincormack/snabbswitch,eugeneia/snabb,snabbco/snabb