Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Tue, 10 Apr 2001 18:26:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Tue, 10 Apr 2001 18:26:23 -0400 Received: from meatloop.andover.net ([209.192.217.120]:48256 "HELO meatloop.andover.net") by vger.kernel.org with SMTP id ; Tue, 10 Apr 2001 18:26:17 -0400 Date: Tue, 10 Apr 2001 18:24:46 -0400 (EDT) From: Dave X-X-Sender: To: Subject: bizarre TCP behavior Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org I am having a very strange problem in linux 2.4 kernels. I have not set any iptables rules at all, and there is no firewall blocking any of my outgoing traffic. At what seems like random selection, I can not connect to IP's yet I can get ping replies from them. Most IP's reply just fine, but certain ones fail to send even an ACK. This problem disappears when I boot into 2.2. Here is a brief example of what I am talking about: meatloop:~>ping 204.202.131.229 PING 204.202.131.229 (204.202.131.229): 56 data bytes 64 bytes from 204.202.131.229: icmp_seq=0 ttl=42 time=114.7 ms 64 bytes from 204.202.131.229: icmp_seq=1 ttl=42 time=117.0 ms [iptraf output] ICMP echo request (84 bytes) from 209.192.217.120 to 204.202.131.229 on eth0 ICMP echo reply (84 bytes) from 204.202.131.229 to 209.192.217.120 on eth0 ICMP echo request (84 bytes) from 209.192.217.120 to 204.202.131.229 on eth0 ICMP echo reply (84 bytes) from 204.202.131.229 to 209.192.217.120 on eth0 meatloop:~>telnet 204.202.131.229 80 Trying 204.202.131.229... telnet: Unable to connect to remote host: Connection timed out [iptraf output] 209.192.217.120:32926 = 6 360 S--- eth0 204.202.131.229:80 = 0 0 ---- eth0 and yet when I boot 2.2, I have not seen any problems of this nature. Is this a known issue? Possibly a setting in /proc/sys/net/ipv4 that I dont know about? Thanks for your help... dave - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/