On 9/12/2024 9:20 PM, Steven Shockley wrote:
I'll try to run some tcpdumps inbound and outbound tomorrow, traffic
should be pretty light.
I did find something interesting that may or may not be related.
The machine is also the Internet gateway. One NIC has a vlan interface
for each network; there's also a Cisco switch that routes between
subnets. The client-to-bind traffic routes via the Cisco switch, but
BIND sends the response via the direct vlan interface.
Bad ASCII art:
Query:
client --> (vlan102) --> switch --> (vlan101) --> DNS
Response:
DNS --> (vlan102) --> client
Is there a way to tell BIND to listen (and respond) on a specific
interface? I already have listen-on { 10.0.0.1; }; (vlan101 IP) in the
config with nothing else listening.
I guess there's nothing technically wrong with this, but it does make it
harder to troubleshoot.
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