relay "via"

[Darren Ankney]

Hi Marki,

When it ends with via <some IP> it means the traffic was relayed by a
relay agent.  When it ends with via <some interface> then it means the
traffic was directly unicast from the client (or there  was no relay
necessary because the client is attached directly to the local
network).

Thanks,

-Darren

On Thu, Mar 23, 2023 at 5:15 AM Marki <dhcp-users at lists.roth.lu> wrote:
>
> Hello,
>
> I would like to understand what the part behind "via" is exactly tryingn
> to tell me in this case.
>
> Why is it once showing "vlan50" (the interface of the DHCP server
> itself) and another time "172.17.8.1" (which is the actual DHCP relay of
> the device in question).
> There is no way the device is sending dhcp requests directly from
> "vlan50", i.e. from the network directly attached to the dhcp server.
>
> 2023-03-23T09:30:46.722240+01:00 dns01 dhcpd: DHCPREQUEST for
> 172.17.8.11 from xx:yy:zz:d9:11:57 (string) via vlan50
> 2023-03-23T09:30:46.722256+01:00 dns01 dhcpd: DHCPACK on 172.17.8.11 to
> xx:yy:zz:d9:11:57 (string) via vlan50
> 2023-03-23T09:31:18.788021+01:00 dns01 dhcpd: DHCPREQUEST for
> 172.17.8.11 from xx:yy:zz:d9:11:57 (string) via 172.17.8.1
> 2023-03-23T09:31:18.788037+01:00 dns01 dhcpd: DHCPACK on 172.17.8.11 to
> xx:yy:zz:d9:11:57 (string) via 172.17.8.1
>
> Thanks
> Marki
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