Date: Thu, 5 Jun 2008 00:17:38 +0200 From: Petar Bogdanovic <petar@smokva.net> To: freebsd-net@freebsd.org Subject: Re: IP-forwarding (help) Message-ID: <20080604221738.GA6776@pintail.smokva.net> In-Reply-To: <wpiqwouczq.fsf@heho.snv.jussieu.fr> References: <wpiqwouczq.fsf@heho.snv.jussieu.fr>
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On Wed, Jun 04, 2008 at 11:06:01PM +0200, Arno J. Klaassen wrote: > > Hello, > > this is probably a FAQ and/or I'm to tired, but I'd be pleased > if anyone can tell me what I do wrong : > > I have a box with two interfaces, one connected to my lan > (172.16. ), one to a test-box (192.168.1.1) : > > em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 > options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM> > ether xxx > inet 172.16.1.240 netmask 0xffffff00 broadcast 172.16.1.255 > media: Ethernet autoselect (1000baseTX <full-duplex>) > status: active > > em1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500 > options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM> > ether xxx > inet 192.168.1.254 netmask 0xffffff00 broadcast 192.168.1.255 > media: Ethernet autoselect (1000baseTX <full-duplex>) > status: active > > > I enable ip.forwarding : > > # sysctl net.inet.ip.forwarding > net.inet.ip.forwarding: 1 > > > And this is my routing table : > > Internet: > Destination Gateway Flags Refs Use Netif Expire > default 172.16.1.254 UGS 0 20 em0 > 127.0.0.1 127.0.0.1 UH 0 0 lo0 > 172.16.1.0/24 link#3 UC 0 0 em0 > 172.16.1.6 xxxxxxxxxxxxxxxxx UHLW 1 87 em0 1194 > 172.16.1.230 xxxxxxxxxxxxxxxxx UHLW 1 286 em0 572 > 172.16.1.240 xxxxxxxxxxxxxxxxx UHLW 1 0 lo0 > 172.16.1.254 xxxxxxxxxxxxxxxxx UHLW 2 0 em0 487 > 192.168.1.0/24 link#4 UC 0 0 em1 > 192.168.1.1 xxxxxxxxxxxxxxxxx UHLW 1 2 em1 616 > 192.168.1.254 xxxxxxxxxxxxxxxxx UHLW 1 0 lo0 > > For this I added to rc.conf : > > static_routes="test lan" > route_test="-net 192.168.1.0/24 192.168.1.254" > route_lan="-net 172.16.1.0/24 172.16.1.240" I'm pretty sure that you don't need these three lines. Turning net.inet.ip.forwarding on should be enough. Petar
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