Jeff King <peff@xxxxxxxx> writes: > Adding a command-line option for "all" is a good idea, but will probably > mean needing to add the "unset" sentinel value I mentioned in the other > email. Sorry, I do not quite follow. I thought that assigning the (misnamed --- see other mail) ALL to the "family" variable would be sufficient? enum transport_family { TRANSPORT_FAMILY_ALL = 0, TRANSPORT_FAMILY_IPV4, TRANSPORT_FAMILY_IPV6 };