On Sat, 9 Jul 2022, Charles Curley wrote:
On Sun, 10 Jul 2022 06:44:46 +0200 (CEST)
local10 <loca...@tutanota.com> wrote:
Jul 10, 2022, 00:51 by charlescur...@charlescurley.com:
I do it in part by
using my own resolver, BIND9, and having it return only IPv4
addresses.
How did you do it? I tried to start named with "-4" option to use
only ipv4 but it refused to start with that option, IIRC.
Regards,
My /etc/default/named looks like:
#
# run resolvconf?
RESOLVCONF=no
# startup options for the server
OPTIONS="-4 -u bind"
That should do it.
But all that does is tell named to use IPv4. It will still return IPv6
addresses. So maybe I'm wrong about returning only IPv4 addresses.
Hmmm....
I was a bit surprised. I've never had to disable ipv6 where the only
public routes are ipv4. Do some people have a default route for ipv6
that doesn't work?
The default settings don't make it easy for radvd to publish anything
other than a /64 prefix and a default route.
I am using ipv6 but I think you need things like:
AdvDefaultLifetime 0;
to stop radvd providing a default route and
echo 64 >/proc/sys/net/ipv6/conf/eth0/accept_ra_rt_info_max_plen
to allow other routes to be configured.
this can mess up your day if there is any risk of rogue RAs on the
network
Tim
