Github user remibergsma commented on the pull request:
https://github.com/apache/cloudstack/pull/1024#issuecomment-153341635
Result before this PR:
```
root@s-58-VM:~# ifconfig
eth0 Link encap:Ethernet HWaddr 0e:00:a9:fe:03:b0
inet addr:169.254.3.176 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1362 errors:0 dropped:0 overruns:0 frame:0
TX packets:74 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:68093 (66.4 KiB) TX bytes:11731 (11.4 KiB)
eth1 Link encap:Ethernet HWaddr 06:8f:3c:00:00:0e
inet addr:192.168.22.143 Bcast:192.168.22.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:63121 errors:0 dropped:1 overruns:0 frame:0
TX packets:31637 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:84701257 (80.7 MiB) TX bytes:125724065 (119.8 MiB)
eth2 Link encap:Ethernet HWaddr 06:3c:56:00:00:16
inet addr:192.168.23.2 Bcast:192.168.23.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1009 errors:0 dropped:0 overruns:0 frame:0
TX packets:36 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:47700 (46.5 KiB) TX bytes:3072 (3.0 KiB)
eth3 Link encap:Ethernet HWaddr 06:9b:9e:00:00:14
inet addr:192.168.22.149 Bcast:192.168.22.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3599 errors:0 dropped:1 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:193180 (188.6 KiB) TX bytes:0 (0.0 B)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 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:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
```
```
root@s-58-VM:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
0.0.0.0 192.168.22.1 0.0.0.0 UG 0 0 0 eth1
8.8.4.4 192.168.22.1 255.255.255.255 UGH 0 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
192.168.22.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.22.0 0.0.0.0 255.255.255.0 U 0 0 0 eth3
192.168.23.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
```
After this PR:
```
root@s-1-VM:~# ifconfig
eth0 Link encap:Ethernet HWaddr 0e:00:a9:fe:03:44
inet addr:169.254.3.68 Bcast:169.254.255.255 Mask:255.255.0.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:30 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1748 (1.7 KiB) TX bytes:687 (687.0 B)
eth1 Link encap:Ethernet HWaddr 06:00:c6:00:00:01
inet addr:192.168.22.130 Bcast:192.168.22.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:39717 errors:0 dropped:0 overruns:0 frame:0
TX packets:17889 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:43372312 (41.3 MiB) TX bytes:63330617 (60.3 MiB)
eth2 Link encap:Ethernet HWaddr 06:82:d6:00:00:16
inet addr:192.168.23.2 Bcast:192.168.23.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:32 errors:0 dropped:0 overruns:0 frame:0
TX packets:34 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3128 (3.0 KiB) TX bytes:2844 (2.7 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 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:0
RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
```
```
root@s-1-VM:~# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
0.0.0.0 192.168.22.1 0.0.0.0 UG 0 0 0 eth1
8.8.4.4 192.168.22.1 255.255.255.255 UGH 0 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
192.168.22.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.23.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
```
I'm running some tests to test the other functions for possible regression.
Once it's done I'll update my review. So far looking good @bhaisaab !
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