Date: Tue, 13 Aug 2013 09:40:01 GMT From: n j <nino80@gmail.com> To: freebsd-ipfw@FreeBSD.org Subject: Re: kern/122963: [ipfw] tcpdump does not show packets redirected by 'ipfw fwd' on proper interface Message-ID: <201308130940.r7D9e18F074624@freefall.freebsd.org>
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The following reply was made to PR kern/122963; it has been noted by GNATS. From: n j <nino80@gmail.com> To: bug-followup@freebsd.org, zuborg@advancedhosters.com Cc: Subject: Re: kern/122963: [ipfw] tcpdump does not show packets redirected by 'ipfw fwd' on proper interface Date: Tue, 13 Aug 2013 11:37:16 +0200 --14dae94ee3b1c4da3004e3d0fd49 Content-Type: text/plain; charset=ISO-8859-1 Hi, I just ran into this bug on 9.0. Likely present on 9.1 as well. Assume: em0 192.168.1.2 em1 10.1.1.2 # forward to port 80 port 8080 traffic going out via em1 ipfw add 100 fwd 192.168.1.2:80 tcp from me 8080 to 10.1.80.80 out xmit em1 # make sure the traffic goes via em1 route add 10.1.80.80 10.1.1.1 # expect to see outgoing packets tcpdump -i em1 host 10.1.80.80 # but no packets seen nc -p 8080 10.1.80.80 31337 Regards, -- Nino --14dae94ee3b1c4da3004e3d0fd49 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable <div dir=3D"ltr"><div><div><div><div><div>Hi,<br><br></div>I just ran into = this bug on 9.0. Likely present on 9.1 as well.<br><br></div>Assume:<br></d= iv><div>em0 192.168.1.2<br>em1 10.1.1.2<br></div><div><br></div><div># forw= ard to port 80 port 8080 traffic going out via em1<br> </div>ipfw add 100 fwd <a href=3D"http://192.168.1.2:80">192.168.1.2:80</a>= tcp from me 8080 to 10.1.80.80 out xmit em1<br><br></div><div># make sure = the traffic goes via em1<br></div>route add 10.1.80.80 10.1.1.1<br><br></di= v> <div># expect to see outgoing packets<br></div>tcpdump -i em1 host 10.1.80.= 80<br><div><br># but no packets seen<br></div><div>nc -p 8080 10.1.80.80 31= 337<br></div><div><br><br></div><div>Regards,<br>-- <br></div><div>Nino<br> </div></div> --14dae94ee3b1c4da3004e3d0fd49--
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