On Sat, 10 Jun 2023 19:24:03 +0200
Ondřej Surý <ond...@isc.org> wrote:
You are over-complicating things. If unconfigured, named binds the
outgoing UDP to 0.0.0.0 (::0), which means the chosen IP address is
picked by the kernel. You need to configure priorities on your
interfaces in the kernel - ip route is your friend.
And for goddess’ sake, don’t do anything wild like proposed round robin
across default routes. That would be a living hell to debug.
On 11.06.23 10:34, Paul Kosinski via bind-users wrote:
If you have some external interfaces you *don't* want named to use, but
might want other outgoing traffic to use, you would need some "policy
based routing", which can get complicated. In Linux, this is controlled
by "ip rule" (not "ip route").
note that query-source settings affects source IP of packet, while "ip rule"
affects outgoing interface (unless you also configure SNAT for those
packets), so they are not exactly the same.
In some cases you may need both.
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