ifdown_eth1_then_if_up_eth1

eth1: link up, 100Mbps, full-duplex, lpa 0xCDE1
eth1: link up, 100Mbps, full-duplex, lpa 0xCDE1
udhcpc (v1.11.2) started
root@Brutus2:/# Sending discover...
Sending discover...

macbook_output

chrisadams@Chris-Adamss-MacBook-2 ~ > ifconfig 
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x1 
	inet 127.0.0.1 netmask 0xff000000 
	inet6 ::1 prefixlen 128 
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	inet6 fe80::21e:c2ff:fe1d:4ef3%en0 prefixlen 64 scopeid 0x4 
	inet 169.254.143.122 netmask 0xffff0000 broadcast 169.254.255.255
	inet 192.168.2.1 netmask 0xffffff00 broadcast 192.168.2.255
	ether 00:1e:c2:1d:4e:f3 
	media: autoselect (100baseTX <full-duplex,flow-control>) status: active
	supported media: autoselect 10baseT/UTP <half-duplex> 10baseT/UTP <full-duplex> 10baseT/UTP <full-duplex,hw-loopback> 10baseT/UTP <full-duplex,flow-control> 100baseTX <half-duplex> 100baseTX <full-duplex> 100baseTX <full-duplex,hw-loopback> 100baseTX <full-duplex,flow-control> 1000baseT <full-duplex> 1000baseT <full-duplex,hw-loopback> 1000baseT <full-duplex,flow-control> none
fw0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 2030
	lladdr 00:1f:5b:ff:fe:27:7f:52 
	media: autoselect <full-duplex> status: inactive
	supported media: autoselect <full-duplex>
en1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	inet6 fe80::21e:c2ff:fea4:d35e%en1 prefixlen 64 scopeid 0x6 
	inet 192.168.2.4 netmask 0xffffff00 broadcast 192.168.2.255
	ether 00:1e:c2:a4:d3:5e 
	media: autoselect status: active
	supported media: autoselect
vboxnet0: flags=8842<BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
	ether 0a:00:27:00:00:00 
en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
	inet6 fe80::21c:42ff:fe00:0%en2 prefixlen 64 scopeid 0x8 
	inet 10.37.129.2 netmask 0xffffff00 broadcast 10.37.129.255
	ether 00:1c:42:00:00:00 
	media: autoselect status: active
	supported media: autoselect
en3: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
	inet6 fe80::21c:42ff:fe00:1%en3 prefixlen 64 scopeid 0x9 
	inet 10.211.55.2 netmask 0xffffff00 broadcast 10.211.55.255
	ether 00:1c:42:00:00:01 
	media: autoselect status: active
	supported media: autoselect

network

root@Brutus2:/# cat /etc/config/network 

config 'interface' 'loopback'
        option 'ifname' 'lo'
        option 'proto' 'static'
        option 'ipaddr' '127.0.0.1'
        option 'netmask' '255.0.0.0'

config 'interface' 'eth0'
        option 'ifname' 'eth0'
        option 'proto' 'static'
        option 'ipaddr' '192.168.1.1'
        option 'netmask' '255.255.255.0'

config 'interface' 'eth1'
        option 'ifname' 'eth1'
        option 'proto' 'dhcp'

config 'interface' 'wan'
        option 'ifname' ' '
        option 'proto' 'none'

open_wrt_ifconfig

root@Brutus2:/# ifconfig 
eth0      Link encap:Ethernet  HWaddr 00:0D:B9:17:0E:48  
          inet addr:192.168.1.1  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:10 Base address:0xa000 

eth1      Link encap:Ethernet  HWaddr 00:0D:B9:17:0E:49  
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:138 errors:0 dropped:0 overruns:0 frame:0
          TX packets:390 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:29646 (28.9 KiB)  TX bytes:156780 (153.1 KiB)
          Interrupt:11 Base address:0xc000 

openwrt_output

root@Brutus2:/# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 brd 127.255.255.255 scope host lo
2: eth0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN qlen 1000
    link/ether 00:0d:b9:17:0e:48 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.1/24 brd 192.168.1.255 scope global eth0
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN qlen 1000
    link/ether 00:0d:b9:17:0e:49 brd ff:ff:ff:ff:ff:ff
4: eth2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
    link/ether 00:0d:b9:17:0e:4a brd ff:ff:ff:ff:ff:ff