Howdy, Y'all:
My host, 'router', seems to not be resolving host names to IP addresses.
I can ping by IP address, but not by domain name. i.e. ping 206.141.251.2 is find, whereas ping gelm.net fails with error: ping: unknown host gelm.net.
This is my router (DSL<>LAN) and is functioning as the local domain name server, but cannot serve its self. ?
Attached is the output of netstat -r route -n resolv.conf
What is not working?
Well, /etc/resolv.conf says that the router is to use 206.141.251.2 as a resolver. And you seem to say above that the router can ping that IP address, which tells us that routing to it is OK. Possibilities I can think of are:
1. What is 206.141.251.2 ? I'm surmising that it is your ISP's nameserver. Do you know that it is a working resolver (to ask the most basic detail question, does it ACCEPT traffic to port 53/UDP)?
2. Are you running any firewalling on your host that might be interfering with traffic to or from the resolver? Checking this is somewhat kernel specific; if you are running 2.4.x, then check with
iptables -nvL
iptables -t nat -nvLIt is quite possible that your default table DENYs or REJECTs DNS traffic to and from the router itself, while your nat table ACCEPTs it to and from LAN hosts.
3. HOW is the router "functioning as the local domain name server"? Is it running BIND (named)? dnscache? Something else? However it provides DNS to the LAN, you do not have it set up to use that method for itself, since the entry (below) in /etc/resolv.conf points to what I assume is an off-LAN nameserver.
One other detail: please ALWAYS report the routing table with "netstat -nr", or an equivalent that reports addresses, not names. YOU know what IP address network "localnet" translates too, but WE do not ... I've been assuming that this router NATs a private-address LAN (e.g., 192.168.1.0/24), but your reporting by network name conceals that information. And if my guess is wrong, a lot else that I said could easily also be wrong.
Chuck
Kernel IP routing table Destination Gateway Genmask Flags MSS Window irtt Iface 68.254.31.254 * 255.255.255.255 UH 0 0 0 ppp0 localnet * 255.255.255.0 U 0 0 0 eth0 loopback * 255.0.0.0 U 0 0 0 lo default 68.254.31.254 0.0.0.0 UG 0 0 0 ppp0 nameserver 206.141.251.2 Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 68.254.31.254 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 127.0.0.0 0.0.0.0 255.0.0.0 U 0 0 0 lo 0.0.0.0 68.254.31.254 0.0.0.0 UG 0 0 0 ppp0
- To unsubscribe from this list: send the line "unsubscribe linux-newbie" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.linux-learn.org/faqs
