Add support for IP version 6

Packages describing “ipv6” as local USE flag

Package “ipv6” Flag Description
net-firewall/shorewall Adds the capability to create a full IPv6 firewall (requires net-firewall/shorewall ipv4 USE flag)
net-firewall/ufw IPv6 support for iptables
net-analyzer/munin Add support for IPv6 in munin-node. IPv6 support for the master is always enabled, but the node requires a newer version of dev-perl/Net-Server, capable of listening to IPv6 sockets.
net-analyzer/zabbix Turn on support of IPv6
net-dialup/ppp Enables support for IP version 6
sys-cluster/glusterfs Use IPv6 by default, requires libtirpc

All packages providing a “ipv6” USE flag (202)