1. [root@cdb1:~]# grep scan /etc/hosts
    2. 192.168.6.33 cluster-scan
    3. #192.168.31.241 cluster-scanfordg
    4. 192.168.31.241 cluster-scan
    5. 192.168.31.225 emdbdg-scanip
    6. [root@cdb1:~]# exit
    7. logout
    8. [grid@cdb1:/opt/app/19.0.0/grid/network/admin +ASM1]$ srvctl stop scan_listener
    9. [grid@cdb1:/opt/app/19.0.0/grid/network/admin +ASM1]$ ip a |grep 33
    10.     inet 192.168.6.33/24 brd 192.168.6.255 scope global secondary enp0s3:1
    11. [grid@cdb1:/opt/app/19.0.0/grid/network/admin +ASM1]$ srvctl stop scan 
    12. [grid@cdb1:/opt/app/19.0.0/grid/network/admin +ASM1]$ ip a |grep 33
    13. [grid@cdb1:/opt/app/19.0.0/grid/network/admin +ASM1]$ su - 
    14. Password: 
    15. Last login: Sun Sep 12 19:11:41 CST 2021 on pts/2
    16. [root@cdb1:~]# which srvctl 
    17. /opt/app/19.0.0/grid/bin/srvctl
    18. [root@cdb1:~]# srvctl modify scan -n cluster-scan
    19. PRCS-1034 : Failed to modify Single Client Access Name cluster-scan
    20. PRCS-1138 : invalid VIP addresses "192.168.31.241" because the specified IP addresses are reachable
    21. [root@cdb1:~]# vi /etc/hosts
    22. [root@cdb1:~]# srvctl modify scan -n cluster-scan^C
    23. [root@cdb1:~]# srvctl modify scan -n cluster-scan 
    24. PRCS-1034 : Failed to modify Single Client Access Name cluster-scan
    25. PRCS-1076 : Invalid Single Client Access Name cluster-scan. The subnet 192.168.31.0 of SCAN VIP 192.168.31.240 differs from the subnet 192.168.6.0 of network 1