[Dnsmasq-discuss] DHCP server not assigning IP to RTMU86

[Kamil]

On 15/05/2022 15:40, Kamil via Dnsmasq-discuss wrote:
>
> > PS. I've read in FAQ about 255.255.255.255 broadcast and invalid
> > firewall rules, but I don't have any firewall rules and I'm not changing
> > network config files when switching to isc-dhcp-server (which I use as a
> > benchmark)
> >
>
> ISC dhcpd bypasses the firewall rules to receive that sort of broadcast
> packet and dnsmasq doesn't, so the fact that it works with ISC and not
> with dnsmasq is a strong hint that a firewall rule dropping destination
> 255.255.255.255 and/or source 0.0.0.0 may well be the problem.
>
> What does the output of
>
> iptables -L
>
> look like?
>
Dear Simon,

Here is the output:

> # iptables -L
> Chain INPUT (policy ACCEPT)
> target     prot opt source               destination
>
> Chain FORWARD (policy ACCEPT)
> target     prot opt source               destination
>
> Chain OUTPUT (policy ACCEPT)
> target     prot opt source               destination

and in /etc/rc.local I do:
> iptables-restore < /etc/iptables

where content of the /etc/iptables file is:
> *nat
> :PREROUTING ACCEPT [0:0]
> :INPUT ACCEPT [0:0]
> :OUTPUT ACCEPT [0:0]
> :POSTROUTING ACCEPT [0:0]
> -A POSTROUTING -o wlan0 -j MASQUERADE
> COMMIT

Kind regards,
Kamil

>
>
> Cheers,
>
> Simon.
>
>
> > Kind regards,
> > Kamil
> >
> >
> >
> >     Groeten
> >     Geert Stappers
> >     --
> >     Silence is hard to parse
> >
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