[Default Route] Define by Lower-MAC

[Case-I]
eth0 = 00:9C:02:99:59:04 Vlan6- [NMS Device]
eth1 = 00:9C:02:99:59:05
eth2 = 00:1B:21:CC:64:8F Vlan106 [Default Route to Internet]

[root@localhost ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.150.0.0 10.4.4.1 255.255.255.0 UG 0 0 0 eth0
10.4.4.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
10.4.4.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.99.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
10.180.0.0 10.4.4.1 255.255.0.0 UG 0 0 0 eth0
10.5.0.0 10.4.4.1 255.255.0.0 UG 0 0 0 eth0
10.154.0.0 10.4.4.1 255.255.0.0 UG 0 0 0 eth0
10.155.0.0 10.4.4.1 255.255.0.0 UG 0 0 0 eth0
10.168.0.0 10.4.4.1 255.255.0.0 UG 0 0 0 eth0
0.0.0.0 192.168.99.1 0.0.0.0 UG 0 0 0 eth2

[Case-II]
em1 = F8:DB:88:FC:98:0D Vlan6- [NMS Device]
eth1 = 68:05:CA:1C:2D:ED Vlan106 [Default Route to Internet]

[root@localhost ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.150.0.0 10.4.4.1 255.255.255.0 UG 0 0 0 em1
10.4.4.0 0.0.0.0 255.255.255.0 U 0 0 0 em1
192.168.99.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
10.180.0.0 10.4.4.1 255.255.0.0 UG 0 0 0 em1
10.5.0.0 10.4.4.1 255.255.0.0 UG 0 0 0 em1
10.154.0.0 10.4.4.1 255.255.0.0 UG 0 0 0 em1
10.155.0.0 10.4.4.1 255.255.0.0 UG 0 0 0 em1
10.168.0.0 10.4.4.1 255.255.0.0 UG 0 0 0 em1
0.0.0.0 192.168.99.1 0.0.0.0 UG 0 0 0 eth0

 

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