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To: psyche-list@listman.redhat.com From: "Quillen, Channon" <CQuillen@txfb-ins.com> Subject: DNS and iptables Date: Tue, 18 Feb 2003 17:01:29 -0600 I noticed that I wasn't able to connect to RHN and was able to troubleshoot the problem down to a DNS problem. However, I'm able to ping the DNS IP's. I'm not able to dig them though. I thought the problem might be with iptables, so I tried to flush it by: #iptables -F I get this error: /lib/modules/2.4.18-24.8.0/kernel/net/ipv4/netfilter/ip_tables.o: init_module: Device or resource busy Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters. You may find more information in syslog or the output from dmesg /lib/modules/2.4.18-24.8.0/kernel/net/ipv4/netfilter/ip_tables.o: insmod /lib/modules/2.4.18-24.8.0/kernel/net/ipv4/netfilter/ip_tables.o failed /lib/modules/2.4.18-24.8.0/kernel/net/ipv4/netfilter/ip_tables.o: insmod ip_tables failed iptables v1.2.6a: can't initialize iptables table `filter': iptables who? (do you need to insmod?) Perhaps iptables or your kernel needs to be upgraded. I also tried booting with a earlier kernel version, but I get the same error. Any ideas? ===