relay "via"

[Friesen, Don CITZ:EX]

When you see the name of the interface, that means the packet was a unicast packet addressed by the client directly to the DHCP server, and not a broadcast that was relayed.

Don Friesen

-----Original Message-----
From: dhcp-users <dhcp-users-bounces at lists.isc.org> On Behalf Of Marki
Sent: March 23, 2023 2:15 AM
To: dhcp-users <dhcp-users at lists.isc.org>
Subject: relay "via"

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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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