dhcp-users Digest, Vol 146, Issue 10

[Patrick Fortin]

Hi

did you try switching the configurations between the two ethernet card ?

setting 192.168.10.2 on the enp0s3 card

Patrick

Le 2020-12-22 à 07:00, dhcp-users-request at lists.isc.org a écrit :
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>     1. Re: DHCPd using wrong interface (glenn.satchell at uniq.com.au)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Tue, 22 Dec 2020 19:07:49 +1100
> From: glenn.satchell at uniq.com.au
> To: Users of ISC DHCP <dhcp-users at lists.isc.org>
> Subject: Re: DHCPd using wrong interface
> Message-ID: <29f54c1862d58af057494ac6f54b1527 at uniq.com.au>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Hi Dan
>
> Which bind server is it trying to update? Those updates are sent as
> unicast packets and are subject to normal routing rules. Perhaps it's
> trying to update the ISP's DNS server?
>
> Can you use tcpdump to see what the destination IP address is?
>
> regards,
> Glenn
>
> On 2020-12-19 18:23, Dan Egli wrote:
>> I am completely stumped on how to solve this one. I have a machine
>> with two NICs. It's my gateway machine between my home private LAN and
>> the internet. The gateway machine has enp0s3 with an address of
>> 10.0.2.15 as it's world facing address (yes, my ISP wants to run
>> everything through NAT. Don't ask me why). The LAN address range is
>> `192.168.10.0/24 on enp0s8.? I configured dhcpd to completely ignore
>> anything coming from 10.0.0.0/8, and I even have enp0s8 listed on the
>> command line (and NOT enp0s3). Yet when dhcpd tries to send update
>> requests to bind, it keeps using the 10.0.2.15 address, which bind
>> properly refuses to listen to. How do I make dhcpd send messages from
>> enp0s8's 192.168.10.2 address vs the 10.0.2.15 address?
>
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