Radvd starts for no apparent reason

athurdent

Anyone else having radvd running and advertising on the latest beta for no apparent reason? This is on my simple pfSense test KVM with no special configuration, after a fresh reboot.
I have not turned on Track for WAN (just using DHCP6) and theres no IPv6 IP assigned to the LAN interface. Radvd runs nonetheless and is not shown under "Status:Services" either:

ps aux | grep radvd
root    57745   0.0  0.2  14484  2200  -  S     3:35PM 0:00.03 /usr/local/sbin/radvd -p /var/run/radvd.pid -C /var/etc/radvd.conf -m syslog

cat /var/etc/radvd.conf
# Automatically Generated, do not edit
# Generated config for dhcp6 delegation from wan on lan
interface em0 {
        AdvSendAdvert on;
        MinRtrAdvInterval 3;
        MaxRtrAdvInterval 10;
        AdvLinkMTU 0;
        AdvOtherConfigFlag on;
                prefix ::/64 {
                AdvOnLink on;
                AdvAutonomous on;
                AdvRouterAddr on;
        };
        DNSSL local-lan { };
};

eri--

Probably because of dhcpv6 active.

Can you share more details about your configuration?

athurdent

It's easy to reproduce, my test VM has em0 (LAN) and em1 (WAN). em1 is behind a FritzBox that provides IPv4 and IPv6 DHCP with delegation.
I just reset the test KVM to defaults and it seems to automatically turn on tracking WAN IPv6 after interface configuration (which is a very good thing for new installations by the way, thanks for that!).

Then on the console I change the LAN IPv4 IP to my actual LAN net and don't set any IPv6 IP. I also disable DHCP when asked. After that radvd is still on and autostarts.

Probably not what most people would do, but as this is just a test installation, I don't need a second DHCP or IPv6 announements from that gateway.

charliem

Are you getting a IPv6 address and a /64 (or smaller) prefix length from your ISP? I would expect radvd to be configured and run in that case.

From my broken ISP, I'm getting an IPv6 address, but a /128 prefix; ie a single host address and no routable networks. radvd is not running on my system, as I expected.

athurdent

My test system is located behind a FritzBox. The box is configured to use a SixXS tunnel and also delegates parts of my SixXS /48 via DHCPv6.
The LAN side of the FritzBox has a /64 net so the WAN side of my test pfSense get's an IP out of that net.
I don't have any native IPv6 at home.