Don't set any default routes.
.It Fl K , -nolink
Don't receive link messages for carrier status.
-You should only have to use this with buggy device drivers.
+You should only have to use this with buggy device drivers or running
+.Nm
+through a network manager.
.It Fl L , -noipv4ll
-Don't use IPv4LL at all.
+Don't use IPv4LL (aka APIPA, aka Bonjour, aka ZeroConf).
.It Fl O , -nooption Ar option
Don't request the specified option.
If no option given, then don't request any options other than those to