Eu removi o arquivo de configuração 70-persistent-net.rules e 70-persistent-cd.rules e ifcfg-eth1 e restaurei a máquina.
então criei o arquivo ifcfg-eth1 e substitui o mac, ips e eth0 txt e restaurei a rede, agora ifconfig mostra:
eth0 Link encap:Ethernet HWaddr 00:50:56:BE:7B:88
inet addr:xx.xx.xx.37 Bcast:xx.xx.xx.63 Mask:255.255.255.192
inet6 addr: fe80::250:56ff:febe:7b88/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:194 errors:0 dropped:0 overruns:0 frame:0
TX packets:88 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:13246 (12.9 KiB) TX bytes:9120 (8.9 KiB)
eth1 Link encap:Ethernet HWaddr 00:50:56:BE:57:C2
inet addr:xx.xx.xx.50 Bcast:xx.xx.xx.63 Mask:255.255.255.192
inet6 addr: fe80::250:56ff:febe:57c2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:104 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:6548 (6.3 KiB) TX bytes:580 (580.0 b)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:394 errors:0 dropped:0 overruns:0 frame:0
TX packets:394 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:61103 (59.6 KiB) TX bytes:61103 (59.6 KiB)