Date: Fri, 22 Feb 2013 06:01:43 +1100 From: Peter Jeremy <peter@rulingia.com> To: "M. V." <bored_to_death85@yahoo.com> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: point-to-point network with unknown peer ip address Message-ID: <20130221190143.GC44920@server.rulingia.com> In-Reply-To: <1361357815.70014.YahooMailNeo@web165005.mail.bf1.yahoo.com> References: <1361357815.70014.YahooMailNeo@web165005.mail.bf1.yahoo.com>
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--DSayHWYpDlRfCAAQ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2013-Feb-20 02:56:55 -0800, "M. V." <bored_to_death85@yahoo.com> wrote: >I have 2 FreeBSD8.2 systems. I have a point-to-point interface >(myif0) on each side connected together, but on each side I don't >know IP address of the other side. to make the connection work, On >each side I set IP address (2.2.2.32/24 and 2.2.2.33/24) and added a >route which sends all traffic to the network to interface: > >#route add 2.2.2.0/24 -interface myif0 > >#ifconfig myif0 >myif0: flags=3D89d1<UP,POINTOPOINT,RUNNING,NOARP,PROMISC,SIMPLEX,MULTICAST= > metric 0 mtu 1500 I'm not certain what you are trying to achieve but point-to-point links would normally be /32, not /24. >now, from one side if I ping the other side (say 2.2.2.33/24) >everything seems ok. but if I ping any other IP in the network (say >2.2.2.100/24) the other endpoint sends back packet + an ICMP REDIRECT >packet. 2.2.2.100 is not a valid address in the network you have described. Where did you expect you expect the packet to be sent? >my sysctl output: >... > >net.inet.ip.redirect: 1 >net.inet.icmp.drop_redirect: 0 >... You don't say what you are trying to achieve but my crystal ball says that you want net.inet.ip.forwarding=3D1 on the remote system. --=20 Peter Jeremy --DSayHWYpDlRfCAAQ Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAlEmbxcACgkQ/opHv/APuIcxMwCglklwqwunTrufuRYs4n4jHdB7 vTUAnRmn2EcBWBvdZ464a+MdXayvBOWd =Qep8 -----END PGP SIGNATURE----- --DSayHWYpDlRfCAAQ--
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