Strange route added to the IP routing table

Issue

• Upon a reboot or a network restart, the IP routing tables shows an unexpected entry:

# netstat -rn
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
10.50.128.0     0.0.0.0         255.255.192.0   U         0 0          0 Auto_eth1  <<<----
169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 Auto_eth1
0.0.0.0         10.50.148.1     0.0.0.0         UG        0 0          0 Auto_eth1

when it's supposed to show:

# netstat -rn
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
10.50.148.0     0.0.0.0         255.255.255.0   U         0 0          0 Auto_eth1  <<<----
169.254.0.0     0.0.0.0         255.255.0.0     U         0 0          0 Auto_eth1
0.0.0.0         10.50.148.1     0.0.0.0         UG        0 0          0 Auto_eth1