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import of dnsmasq-2.6.tar.gz

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Simon Kelley
2004-04-03 21:10:00 +01:00
parent 8a911ccc75
commit 33820b7ed9
16 changed files with 865 additions and 365 deletions
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35
FAQ
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@@ -181,7 +181,42 @@ A: There are a couple of configuration gotchas which have been
and from ports 67 and 68 and broadcast packets with source
address 0.0.0.0 and destination address 255.255.255.255 are not
dropped by iptables/ipchains.
Q: I'm running Debian, and my machines get an address fine with DHCP,
but their names are not appearing in the DNS.
A: By default, none of the DHCP clients send the host-name when asking
for a lease. For most of the clients, you can set the host-name to
send with the "hostname" keyword in /etc/network/interfaces. (See
"man interfaces" for details.) That doesn't work for dhclient, were
you have to add something like "send host-name daisy" to
/etc/dhclient.conf
Q: I'm network booting my machines, and trying to give them static
DHCP-assigned addresses. The machine gets its correct address
whilst booting, but then the OS starts and it seems to get
allocated a different address.
A: What is happening is this: The boot process sends a DHCP
request and gets allocated the static address corresponding to its
MAC address. The boot loader does not send a client-id. Then the OS
starts and repeats the DHCP process, but it it does send a
client-id. Dnsmasq cannot assume that the two requests are from the
same machine (since the client ID's don't match) and even though
the MAC address has a static allocation, that address is still in
use by the first incarnation of the machine (the one from the boot,
without a client ID.) dnsmasq therefore has to give the machine a
dynamic address from its pool. There are two ways to solve this:
(1) persuade your DHCP client not to send a client ID, or (2) set up
the static assignment to the client ID, not the MAC address. The
default client-id will be 01:<MAC address>, so change the dhcp-host
line from "dhcp-host=11:22:33:44:55:66,1.2.3.4" to
"dhcp-host=id:01:11:22:33:44:55:66,1.2.3.4"
Q: What network types are supported by the DHCP server?
A: Ethernet (and 802.11 wireless) are supported on all platforms. On
Linux Token Ring is also supported.