FreeBSD, ipfilter, and IPv4 and IPv6 rules?

David Mehler dave.mehler at
Fri Jun 5 14:59:43 UTC 2020


I'm looking for a working configuration of ipfilter on FreeBSD that
uses both IPv4 and IPv6 rules. I've got v4 rules defined which are
working in /etc/ipf.rules. When I try to get a SLAAC address on system
reboot that fails, and my ipv6 rules are not autoloading which
according to /etc/default/rc.conf should be in a file called
/etc/ipf6.rules. To get them to load I have to do ipf -FA -f
/etc/ipf6.rules then I get an ipv6 address just pops right up. I'm
also interested in the tcp/udp/tcp6/udp6 ports rtsold and SLAAC use?


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