Date: Fri, 29 May 2009 21:44:08 +0200 From: Sebastian Mellmann <sebastian.mellmann@net.t-labs.tu-berlin.de> To: Jason DiCioccio <jd@ods.org>, freebsd-net@freebsd.org Subject: Re: pktgen udp doesn't work over freebsd gateway Message-ID: <4A203B08.7010807@net.t-labs.tu-berlin.de> In-Reply-To: <f372a76b0905291205o5e4fe141y185703412f203114@mail.gmail.com> References: <f879e195b4fde9d487d732376348e81f.squirrel@anubis.getmyip.com> <f372a76b0905291205o5e4fe141y185703412f203114@mail.gmail.com>
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> Is 192.168.7.1 the freebsd gateway? Because that would explain it. > You need to send to the linux box's IP > > No, 192.168.7.1 is the linux box. Cheers, Sebastian > On 2009-05-29, Sebastian Mellmann > <sebastian.mellmann@net.t-labs.tu-berlin.de> wrote: > >> Hello everyone! >> >> I'm using 'pktgen' [1] under linux to generate packets. >> >> >> My topology looks like this: >> >> (linux-box #1) <---> (em0 - freebsd-gateway - em1) <---> (linux-box #2) >> >> I want to send packets from linux-box #1 to linux-box #2 over the free-bsd >> gateway. >> The problem is that I can see the packets on em0, but not on em1. >> I assume there's a configuration missing on the BSD machine, because it >> seems it just drops the packets hence doesn't forward them to linux-box >> #2. >> >> rc.conf: >> gateway_enable="YES" >> keymap="german.iso" >> sshd_enable="YES" >> firewall_enable="YES" >> firewall_type="OPEN" >> firewall_logging="YES" >> >> Default option for ipfw is to accept packets. >> >> tcpdump em0: >> 11:42:36.334798 IP (tos 0x0, ttl 32, id 129, offset 0, flags [none], proto >> UDP (17), length 46) 192.168.5.1.9 > 192.168.7.1.9: [no cksum] UDP, length >> 18 >> 11:42:36.334802 IP (tos 0x0, ttl 32, id 129, offset 0, flags [none], proto >> UDP (17), length 46) 192.168.5.1.9 > 192.168.7.1.9: [no cksum] UDP, length >> 18 >> 11:42:36.334805 IP (tos 0x0, ttl 32, id 129, offset 0, flags [none], proto >> UDP (17), length 46) 192.168.5.1.9 > 192.168.7.1.9: [no cksum] UDP, length >> 18 >> 11:42:36.334807 IP (tos 0x0, ttl 32, id 129, offset 0, flags [none], proto >> UDP (17), length 46) 192.168.5.1.9 > 192.168.7.1.9: [no cksum] UDP, length >> 18 >> 11:42:36.334810 IP (tos 0x0, ttl 32, id 129, offset 0, flags [none], proto >> UDP (17), length 46) 192.168.5.1.9 > 192.168.7.1.9: [no cksum] UDP, length >> 18 >> 11:42:36.334813 IP (tos 0x0, ttl 32, id 129, offset 0, flags [none], proto >> UDP (17), length 46) 192.168.5.1.9 > 192.168.7.1.9: [no cksum] UDP, length >> 18 >> 11:42:36.334816 IP (tos 0x0, ttl 32, id 129, offset 0, flags [none], proto >> UDP (17), length 46) 192.168.5.1.9 > 192.168.7.1.9: [no cksum] UDP, length >> 18 >> 11:42:36.334819 IP (tos 0x0, ttl 32, id 129, offset 0, flags [none], proto >> UDP (17), length 46) 192.168.5.1.9 > 192.168.7.1.9: [no cksum] UDP, length >> 18 >> 11:42:36.334821 IP (tos 0x0, ttl 32, id 129, offset 0, flags [none], proto >> UDP (17), length 46) 192.168.5.1.9 > 192.168.7.1.9: [no cksum] UDP, length >> 18 >> 11:42:36.334824 IP (tos 0x0, ttl 32, id 129, offset 0, flags [none], proto >> UDP (17), length 46) 192.168.5.1.9 > 192.168.7.1.9: [no cksum] UDP, length >> 18 >> >> tcpdump em1: >> nothing. >> >> >> Is there any sysctl variable that needs to be set? >> >> Connectivity between the boxes is definately working (tested with ping, >> iperf etc.). >> >> >> Regards, >> Sebastian >> >> [1] http://www.linuxfoundation.org/en/Net:Pktgen >> >> _______________________________________________ >> freebsd-net@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-net >> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >> >> > >
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