ip traffic not routed unless assigned static ip

rbees · 08-09-2015, 11:25 AM

Ladies & Gents,

Thanks for the great help and guidance always provided on this site.

Some time ago I set up a new dhcp/dns/firewall host. Part of the network is assigned static ip's by the dhcp server and visitors get assigned a dynamic ip by dhcp and that all works fine. Yet their traffic is not routed to the Internet unless I write a static rule into the dhcp config, restart it and restart the guest.

I use Arno's iptables firewall. I have been through the config and can't find any setting that I think should account for this behavior. I also have been through the dhcp server config and see nothing there either.

Any ideas?

Thanks

smallpond · 08-10-2015, 09:16 AM

Is the dhcp server sending a gateway IP to the clients? Something like:

Code:

        option routers 192.168.66.1;

rbees · 08-10-2015, 04:46 PM

Thanks smallpond

Code:

authoritative;
option domain-name "torahDisciple.local";
option domain-name-servers 192.168.7.1, 208.67.222.222, 208.67.220.220;

ddns-updates on;
ddns-update-style interim;
ignore client-updates;
update-static-leases on;

default-lease-time 86400;
max-lease-time 86400;
log-facility local7;

allow booting;
subnet 192.168.7.0 netmask 255.255.255.192 {
# 192.168.7.32/26
range 192.168.7.33 192.168.7.62;
option routers 192.168.7.1;
option broadcast-address 192.168.7.63;
}

then some zone declaration and statically assigned ip's.