Aaron J Weber wrote:
I have a new RH ES 4 box I'm trying to bring online.
It's setup for dhcp and I see my dnsmasq receiving the requests in the
messages (syslog) on that host. It also says it's replying with
DHCPOFFER's of valid IP addresses. But for some reason the RH box
refuses to bring up eth0 -- it's apparently not receiving the DHCP
replies or it doesn't like the format of them or something???
I don't see this occur with my windoze clients.
Can anyone help me troubleshoot? I can find my way around Linux pretty
well, so if you have some places to look and/or debug settings for
client or server side of the DHCP that would help.
Which DHCP client are you using on RedHat? Have you tried a different
one? Are there any firewall/iptables rules in place on the RedHat Box?
If Windoze, works on the same network, and you're seeing dnsmasq log
DHCPOFFERS, it's highly unlikely to be a dnsmasq configuration problem.
Every once in a while, someone comes across a client which works with
the ISC DHCP server, but doesn't work with dnsmasq. (almost always, said
client turns out to be buggy, and someone hacked on it just long enough
to work with ISC server, but not long enough to get it right.) But
that's normally some obscure embeded client in a printer, or suchlike,
all of the common Linux DHCP clients are known to work fine.
Maybe there's one or more of the dnsmasq settings I should tweak?
None.
I
have the dhcp-authoritative set to TRUE (as it applies), but could it be
causing an issue?
I can't think of a way that it could.
Try these.
1) Another DHCP client.
2) Remove all firewall rules.
3) Use ethereal/tcpdump to check that the OFFER packets are getting out
onto the network.
Please, please help?
-AJ
HTH
Simon.
