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Date: Tue, 08 Jul 2003 12:41:43 -0400
From: "Michael A. Smith" <msmith@code-fu.com>
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Subject: dual-homed problems
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I've got a machine that's been running fine for years with one NIC. I 
want to experiment with setting it up as a gateway and have installed a 
second NIC in it. I can't seem to get the second NIC working fully.

Here's the dmesg output on the two NICs:
dc0: <82c169 PNIC 10/100BaseTX> port 0x9100-0x91ff mem 
0x81061000-0x810610ff irq 1 at device 11.0 on pci0
dc0: interrupting at CIA irq 1
dc0: Ethernet address: 00:02:e3:07:17:3b
miibus0: <MII bus> on dc0
ukphy0: <Generic IEEE 802.3u media interface> on miibus0
ukphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto
rl0: <D-Link DFE-530TX+ 10/100BaseTX> port 0x9200-0x92ff mem 
0x81061100-0x810611ff irq 3 at device 12.0 on pci0
rl0: interrupting at CIA irq 3
rl0: Ethernet address: 00:05:5d:36:15:a7
miibus1: <MII bus> on rl0
rlphy0: <RealTek internal media interface> on miibus1
rlphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto

Here's the ifconfig output on the two NICs:
dc0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
         inet 192.168.1.144 netmask 0xffffff00 broadcast 192.168.1.255
         inet6 fe80::202:e3ff:fe07:173b%dc0 prefixlen 64 scopeid 0x1
         ether 00:02:e3:07:17:3b
         media: Ethernet autoselect (100baseTX <full-duplex>)
         status: active
rl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
         inet6 fe80::205:5dff:fe36:15a7%rl0 prefixlen 64 scopeid 0x2
         ether 00:05:5d:36:15:a7
         media: Ethernet autoselect (100baseTX <full-duplex>)
         status: active

Here's my /etc/rc.conf lines for the two NICs:
ifconfig_dc0="inet 192.168.1.144  netmask 255.255.255.0"
ifconfig_rl0="inet 192.168.1.145  netmask 255.255.255.0"


As you can see from the ifconfig output, the new NIC is UP and RUNNING, 
but has no IP address (even though I have it in /etc/rc.conf). I can 
bring rl0 "down" and "up" again without a problem. If I try to add the 
IP data manually using ifconfig, I get this error:

zeus# ifconfig rl0 inet 192.168.1.145 netmask 255.255.255.0
ifconfig: ioctl (SIOCAIFADDR): File exists

Any ideas for getting this NIC up and running properly??

Thanks!!

-- 
Michael A. Smith <msmith@code-fu.com>
Programmer at Large