cthelper: fix IPv6 address and mask in newly created expectations

Set to zero the entire address if needed, not just 4 bytes.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
conntrack-tools 1.4.2 release

bump dependency with libnetfilter_conntrack to 1.0.4, otherwise
we don't get the connlabel support.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
conntrack: fix dump of IPv6 entries in the dying and unconfirmed list

Use selected the family, instead of inconditionally request for IPv4.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>