Date: Sat, 12 Apr 2008 09:24:28 GMT From: Sergey Zabolotny <vintiliator@mail.ru> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/122685: It is not visible passing packets in tcpdump Message-ID: <200804120924.m3C9OS8l068978@www.freebsd.org> Resent-Message-ID: <200804120930.m3C9U3DN066417@freefall.freebsd.org>
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>Number: 122685 >Category: misc >Synopsis: It is not visible passing packets in tcpdump >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Apr 12 09:30:02 UTC 2008 >Closed-Date: >Last-Modified: >Originator: Sergey Zabolotny >Release: 7.0 >Organization: >Environment: FreeBSD gw.deadnet.net 7.0-RELEASE FreeBSD 7.0-RELEASE #10: Fri Apr 11 20:47:03 EEST 2008 Zuram@gw.deadnet.net:/usr/src/sys/i386/compile/gw.deadnet.net i386 >Description: There are two channels in the Internet. Default gateway through iface1. There is a rule in firewall: fwd ip_gw_iface2 ip from ip_iface2 to any out xmit iface1 do ping -S ip_iface1 mail.ru answers is, tcpdumpd shows sending requests and replays on the interface iface1. do ping -S ip_iface2 mail.ru answers is, tcpdumpd shows only answers on the interface iface2. requests I do not see neither on iface1 nor on iface2. >How-To-Repeat: ifconfig fxp0 inet 192.168.1.254/24 ifconfig fxp1 inet 192.168.2.254/24 route add default 192.168.1.1 ipfw add 1 fwd 192.168.2.1 ip from 192.168.2.254 to any out xmit fxp0 ipfw add 2 allow ip from any to any ping -S 192.168.2.254 mail.ru >/dev/null & tcpdump -ni fxp1 icmp tcpdump -ni fxp2 icmp >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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