Date: Mon, 9 Dec 2013 09:36:55 +0200 From: Sami Halabi <sodynet1@gmail.com> To: Julian Elischer <julian@freebsd.org> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, Victor Gamov <vit@euro-comm.net> Subject: Re: Netgraph ng_patch and ng_input: where to find packets? Message-ID: <CAEW%2BogYbzXfN=JB7ozYC686iR6vbNMwehVJ7vcJUT60cfNUkJw@mail.gmail.com> In-Reply-To: <52A493F1.6040700@freebsd.org> References: <ED66CBAA-575E-4823-9AEE-4A44FEF6AB01@euro-comm.net> <5293E3E7.6090604@freebsd.org> <B2B699D8-0BD8-451F-8685-C7B8C56AA7F0@euro-comm.net> <F39CFDF7-0772-488D-9DB9-350AEC495884@euro-comm.net> <CAEW%2BogZNpqzxAYMArqa8jkb=O1OipKo9jYQ90iZq=0pxqPY=TQ@mail.gmail.com> <52A493F1.6040700@freebsd.org>
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Hi, Actually following the ng_patch the following worked for me (using 9.2-R -amd64): kldload ng_patch kldload ng_ipfw /usr/sbin/ngctl -f- << SEQ mkpeer ipfw: patch 300 in name ipfw:300 src_dst_chg msg src_dst_chg: setconfig { count=3D2 csum_flags=3D1 ops= =3D[ \ { mode=3D1 value=3D0xc0a8e609 length=3D4 offset=3D= 12 } \ { mode=3D1 value=3D0xc0a8e680 length=3D4 offset=3D= 16 } ] } SEQ /sbin/ipfw add 600 netgraph 300 log ip from any to 239.0.0.19 dst-port 1234 in via vlan999 Sami On Sun, Dec 8, 2013 at 5:44 PM, Julian Elischer <julian@freebsd.org> wrote: > On 12/8/13, 6:43 PM, Sami Halabi wrote: > >> Hi Gamov, >> Have got this to work? >> If so would share configurations? >> >> Thanks in advance, >> Sami >> =D7=91=D7=AA=D7=90=D7=A8=D7=99=D7=9A 29 =D7=91=D7=A0=D7=95=D7=91 2013 19= :28, "Victor Gamov" <vit@euro-comm.net> =D7=9B=D7=AA=D7=91: >> >> >> > if not then the way to track it it to put a breakpoint on the netgraph > node that handles the packet and just single step through until you see > where the packet goes.. > kdb would give you a decent idea but a second machine (or a virtual > machine) with kgdb would really show you what's going on. > > > --=20 Sami Halabi Information Systems Engineer NMS Projects Expert FreeBSD SysAdmin Expert
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