isc-dhcp-4.4.1: dhcprelay consult on coexist.

[Keith Lu (yenlu)]

Hi, guys,

I have a question on how to apply isc-dhcp_4.4.1-2.3+deb11u2.dsc to 
coexist on dhcp packets to be relayed and not to be relayed.


For an example,
I have 2 vlans called vlan10(eth1) and vlan20(eth2 and eth3).
Vlan10 ip is 192.169.10.1
Vlan20 ip is 192.169.20.1

Dhcp server is at vlan20 on eth2 with ip 192.168.20.100
Dhcp clients are at vlan10 on eth1 and vlan20 on eth3.

How can I configure ISC DHCP-RELAY to 
Do relay packet from eth1 to eth2.
Not relay packet to by pass eth3 to eth2.

what I found is all dhcp packets are all relayed on current configuration.

Keith.