[Dnsmasq-discuss] relay packets black hole

oss.group at omnilan.de oss.group at omnilan.de
Wed Dec 4 17:16:42 UTC 2024


On 2024-12-04 10:10, oss.group at omnilan.de wrote:
> ...
> Hereby I happily confirm that 5a1f2c577d fixes --dhcp-relay=<local 
> address>,<server address> problem with dnsmasq 2.90 on FreeBSD 14.2.
> Also --dhcp-proxy seems to work as designed, a very brief check showed 
> expected results with the following dnsmasq.conf
> no-resolv
> no-hosts
> domain=ab.cd.example.com
> dhcp-range=172.17.147.0,172.17.147.254,255.255.240.0,15m
> dhcp-proxy=172.17.146.10
> dhcp-authoritative
> log-dhcp 
...

My intention was to provide a working example for a relay-agent & proxy 
config...  messed it up, the -range line is wrong of course.
So this is the relevant lines from my tested setup:
dhcp-relay=172.17.146.10,172.17.128.253
dhcp-proxy=172.17.146.10
dhcp-authoritative

The relay has eth0 with 172.17.128.14/23 and eth1 with 172.17.146.10/21 
<- client face.
The server has 172.17.128.253/23 with a host route to 172.17.146.10 via 
172.17.146.10.

-harry




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