Date: Tue, 11 Apr 2006 06:59:49 +0200 From: "Terrence Koeman" <root@mediamonks.net> To: <freebsd-questions@freebsd.org> Subject: Faking multiple physical adapters for DHCPDISCOVER Message-ID: <005801c65d24$c9f350d0$5dd9f270$@net>
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[-- Attachment #1 --] Hi, I'm trying to 'fake' multiple phisical adapters in my FreeBSD 6.1-PRERELEASE system, but I'm not getting anywhere. -There are two 3Com 905C cards in the system (xl0 and xl1). -xl1 is assigned a static private IP address and xl0 aquires an address from my provider using DHCP. -The system does NAT for several clients having private addresses. I need to 'clone' the xl1 adapter to appear as three adapters, each with a distinct MAC address. This because my provider has assigned me three semi-static addresses of which I want to use 1 for outbound NAT-traffic and two for static NAT. These addresses are semi-static because they are basically MAC-based reservations on the providers DHCP server, and it happens to be that I'm required to aquire a DHCP lease for all three addresses for routing to work properly. If I configure the addresses statically the connectivity 'disappears' after a while. I tried using netgraph as suggested here: http://ezine.daemonnews.org/200406/netgraph.html ifconfig xl1 delete ngctl mkpeer . eiface hook ether ifconfig ngeth0 up ngctl mkpeer ngeth0: bridge lower link0 ngctl name ngeth0:lower mybridge ngctl connect xl1: mybridge: lower link1 ngctl connect xl1: mybridge: upper link2 ngctl connect ngeth0: mybridge: upper link3 ngctl msg xl1: setautosrc 0 ngctl msg xl1: setpromisc 1 ifconfig ngeth0 link 00:50:04:32:8a:6b At this point everything seems OK, the MAC-address is correctly set and xl1 is in promiscous mode. However, when I try 'dhclient ngeth0' the adapter does not get any response/lease. I also tried using a vlan interface as following: ifconfig vlan create ngctl msg xl1: setautosrc 0 ifconfig vlan0 vlan 0 vlandev xl1 ifconfig vlan0 link 00:50:04:32:8a:6b The same here, 'dhclient vlan0' fails. I also thought that it'd be much simpler to have a dhcp client that I could instruct to spoof the MAC-addresses so that it would aquire leases for 3 distinct mac-addresses, and run as a daemon so that it renews them when they expire. I could then just configure the addresses statically and don't have to clone any adapters. However, I haven't found any client that could do this... At the moment I'm out of ideas and I was hoping that someone here could point me in the right direction with this problem. -- Regards, Terrence Koeman MediaMonks B.V. (www.mediamonks.com) Please quote all replies in correspondence. [-- Attachment #2 --] 0 *H 01 0 + 0 *H 0h0P vyK0 *H 0w1 0 UBE10U GlobalSign nv-sa1 0 U PersonalSign Class 2 CA1+0)U"GlobalSign PersonalSign Class 2 CA0 051229122418Z 061229122418Z0e1 0 UNL10U MediaMonks B.V.10UTerrence Koeman1"0 *H root@mediamonks.net00 *H 0 5ԙ';zo/ۜuU} [WBz|DLZ5.dC/ɦW>ߕeP p 4|>lzRаK Lr-5 o'ks1> Q 00 `HB0U 0 U #0m+} U+6L!10AU :0806420http://crl.globalsign.net/PersonalSignClass2.crl0 *H dк>3S7ՊG8'lsN'A E,r曭+ :g}8}K&[=YoN<)maJ 1e04 nDջ`FFسE< He+R/7Q]+1V`H ui z6%O)hnyOs'aT F!eSt@6,ttEcQd%Ԙks\-43n"q*0u0] x0 *H 0W1 0 UBE10U GlobalSign nv-sa10U Root CA10UGlobalSign Root CA0 980901120000Z 140128120000Z0W1 0 UBE10U GlobalSign nv-sa10U Root CA10UGlobalSign Root CA0"0 *H 0 晍ΣO~%kH *cgf H+)e-˫ Lp= 0OԌP P.R}m50^CsAj㲉:V98o<i[*MŧTl̛<<xtnDaэFumlx 8$OsT: 4w Sn{7tpG"QcyA&+FHd*׃4,*lCJ|!hR B0@0U 0 U `{fE ʉP/}4K0U 00 *H _9)(4lOodpJO`(I} 尝=6ۏQ 1* ݉w.l˴ ?Mj*-x o+D PL$ZG^I7:)G:<wFcS!Ѭ~IKgY/,B|5է1:NcC9a4ӘC4);VXw>TE1ekXq R2@` y$lfݘDO.{k,vFx00ˠ a0 *H 0W1 0 UBE10U GlobalSign nv-sa10U Root CA10UGlobalSign Root CA0 990128120000Z 140127110000Z0m1 0 UBE10U GlobalSign nv-sa10U Primary Class 2 CA1&0$U GlobalSign Primary Class 2 CA0"0 *H 0 EAnؿ!oR, ?Jc*I'ZtUѪy՝OƲ^c:o(A"NHϹٽ8O; DnUA ؿ!L" ĨkOuhV(P$.$9 dI!h~q0`9PzM k|yNJ6 6dB_ĺ@:YMSPQ lm]|?|O'%pPYufX,މ ICw 00U 0U 00 U |粱,ޱkv Nlǹ03U ,0*0(&$"http://crl.globalsign.net/Root.crl0 U #0`{fE ʉP/}4K0 *H @`_J a"Ћ;Jzí N:3J 6n=>ks7vPi肋)&=ijh{+>hSz`v#xy4ΏUm pS.x<2/TY_SL$5ݿ.( ss` ix |xd_nõ'Y&poq_2`f >҄ Q/פ-oخ4 +{yebHb Sre&4ˋYS 0 0 a!j0 *H 0m1 0 UBE10U GlobalSign nv-sa10U Primary Class 2 CA1&0$U GlobalSign Primary Class 2 CA0 040122090000Z 140127100000Z0w1 0 UBE10U GlobalSign nv-sa1 0 U PersonalSign Class 2 CA1+0)U"GlobalSign PersonalSign Class 2 CA0"0 *H 0 x6 t9'iWǮM7onG[ y_,RYi_gq.݉ $$DضN@, \Uv8z_d.^xNW Qx*$I^E)7C 7q2*3 jI[)Cjx2P1j24q]$Yab+ȈF91łv9HqK\$dd)^ s&۟G*5Nrt6 00U 0U 0 0 U m+} U+6L!109U 2000.,*(http://crl.globalsign.net/primclass2.crl0 `HB0 U #0|粱,ޱkv Nlǹ0 *H zyFY?cU9L}B-[3 ?w쬪s<0k[̚zGyzMlC@3lpV ,Y8ν=ۧڡi8W d7%nL؍W\7' \N',TB¤^v<D\JK}`0ira<LuN $,Q33OQsu&B]x vj;aZi2 /A8:`6Z7 +^m Ct qDZZ1-0)00w1 0 UBE10U GlobalSign nv-sa1 0 U PersonalSign Class 2 CA1+0)U"GlobalSign PersonalSign Class 2 CA vyK0 + 0 *H 1 *H 0 *H 1 060411045949Z0# *H 1 Lt\ jH}_0g *H 1Z0X0 *H 0*H 0 *H @0+0 *H (0+0 *H 0 +7100w1 0 UBE10U GlobalSign nv-sa1 0 U PersonalSign Class 2 CA1+0)U"GlobalSign PersonalSign Class 2 CA vyK0 *H 10w1 0 UBE10U GlobalSign nv-sa1 0 U PersonalSign Class 2 CA1+0)U"GlobalSign PersonalSign Class 2 CA vyK0 *H F Ouτ`#6'4k(8^92exzAfoVrAkBN"9G}o#ӋZ@mP2 UwÃG\ ľ nbm,!A}nb
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