Problems with DHCP using VLANs

sthaug at sthaug at
Thu Aug 27 17:44:25 UTC 2009

> Is it possible in future versions to put some kind of syslog output
> that says what interfaces dhcpd is listening on?  If I had seen output
> like that, I would have known what to look for. . .

On my (FreeBSD) systems, dhcpd *does* say what interface is it listening
on, on startup. Slightly anonymized example:

Aug  1 22:25:13 dhcp2 dhcpd: Listening on BPF/vlan0/00:13:72:51:66:dd/193.75.x.y/30
Aug  1 22:36:43 dhcp2 dhcpd: Listening on Socket/vlan0/193.75.x.y/30

(The first one is your traditional "handle all broadcast traffic" dhcpd,
the second one only listens on a specific IP address, and thus requires
a DHCP relay agent.)

Steinar Haug, Nethelp consulting, sthaug at

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