Inva valid vip in RAC configuration

I am trying to install 10G RAC on OEL,after specifying cluster configuration nodes i am getting below error.
The Following node names are invalid as they do not resolve valid ip address.
here is my /etc/hosts entires.
[oracle@racnode1 ~]$ cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
##=======================================
# Pulic Network
##=======================================
10.172.20.190 racnode1.soft1.com racnode1
10.172.20.191 racnode2.soft1.com racnode2
10.172.20.192 racnode3.soft1.com racnode3
10.172.20.193 racnode4.soft1.com racnode4
##=======================================
# VIPs
##=======================================
10.172.20.290 racnode1-vip.soft1.com racnode1-vip
10.172.20.291 racnode2-vip.soft1.com racnode2-vip
10.172.20.292 racnode3-vip.soft1.com racnode3-vip
10.172.20.293 racnode4-vip.soft1.com racnode4-vip
##=======================================
# Private Network for Cluster Interconnect
##=======================================
10.10.10.30 racnode1-priv.soft1.com racnode1-priv
10.10.10.31 racnode2-priv.soft1.com racnode2-priv
10.10.10.32 racnode3-priv.soft1.com racnode3-priv
10.10.10.34 racnode4-priv.soft1.com racnode4-priv
######DNS For SCAN LISTENER##############
10.172.20.294 scan.soft1.com scan
[oracle@racnode1 ~]$

Thanks, i removed scan IP from hosts entries,however now after specifying voating disk location(ocfs), i am getting below error.
error thrown when the IP address of a host can't be determined
here is modified entries.
[root@racnode1 crs]# cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 ; localhost.localdomain ; localhost
##=======================================
# Pulic Network
##=======================================
10.172.20.190 ; racnode1.soft1.com ; racnode1
10.172.20.191 ; racnode2.soft1.com ; racnode2
10.172.20.192 ; racnode3.soft1.com ; racnode3
10.172.20.193 ; racnode4.soft1.com ; racnode4
##=======================================
# VIPs
##=======================================
10.172.20.201 ; racnode1-vip.soft1.com ; racnode1-vip
10.172.20.202 ; racnode2-vip.soft1.com ; racnode2-vip
10.172.20.203 ; racnode3-vip.soft1.com ; racnode3-vip
10.172.20.204 ; racnode4-vip.soft1.com ; racnode4-vip
##=======================================
# Private Network for Cluster Interconnect
##=======================================
10.10.10.30 ; racnode1-priv.soft1.com ; racnode1-priv
10.10.10.31 ; racnode2-priv.soft1.com ; racnode2-priv
10.10.10.32 ; racnode3-priv.soft1.com ; racnode3-priv
10.10.10.34 ; racnode4-priv.soft1.com ; racnode4-priv
[root@racnode1 crs]#
Node2:
====
[oracle@racnode2 .ssh]$ cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 ; localhost.localdomain ; localhost
##=======================================
# Pulic Network
##=======================================
10.172.20.190 ; racnode1.soft1.com ; racnode1
10.172.20.191 ; racnode2.soft1.com ; racnode2
10.172.20.192 ; racnode3.soft1.com ; racnode3
10.172.20.193 ; racnode4.soft1.com ; racnode4
##=======================================
# VIPs
##=======================================
10.172.20.201 ; racnode1-vip.soft1.com ; racnode1-vip
10.172.20.202 ; racnode2-vip.soft1.com ; racnode2-vip
10.172.20.203 ; racnode3-vip.soft1.com ; racnode3-vip
10.172.20.204 ; racnode4-vip.soft1.com ; racnode4-vip
##=======================================
# Private Network for Cluster Interconnect
##=======================================
10.10.10.30 ; racnode1-priv.soft1.com ; racnode1-priv
10.10.10.31 ; racnode2-priv.soft1.com ; racnode2-priv
10.10.10.32 ; racnode3-priv.soft1.com ; racnode3-priv
10.10.10.34 ; racnode4-priv.soft1.com ; racnode4-priv
[oracle@racnode2 .ssh]$
Node3:
=====
[oracle@racnode3 clusterware]$ cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 ; localhost.localdomain ; localhost
##=======================================
# Pulic Network
##=======================================
10.172.20.190 ; racnode1.soft1.com ; racnode1
10.172.20.191 ; racnode2.soft1.com ; racnode2
10.172.20.192 ; racnode3.soft1.com ; racnode3
10.172.20.193 ; racnode4.soft1.com ; racnode4
##=======================================
# VIPs
##=======================================
10.172.20.201 ; racnode1-vip.soft1.com ; racnode1-vip
10.172.20.202 ; racnode2-vip.soft1.com ; racnode2-vip
10.172.20.203 ; racnode3-vip.soft1.com ; racnode3-vip
10.172.20.204 ; racnode4-vip.soft1.com ; racnode4-vip
##=======================================
# Private Network for Cluster Interconnect
##=======================================
10.10.10.30 ; racnode1-priv.soft1.com ; racnode1-priv
10.10.10.31 ; racnode2-priv.soft1.com ; racnode2-priv
10.10.10.32 ; racnode3-priv.soft1.com ; racnode3-priv
10.10.10.34 ; racnode4-priv.soft1.com ; racnode4-priv
[oracle@racnode3 clusterware]$
Node4:
======
[oracle@racnode4 ~]$ cat /etc/hosts
# Do not remove the following line, or various programs
# that require network functionality will fail.
127.0.0.1 localhost.localdomain localhost
##=======================================
# Pulic Network
##=======================================
10.172.20.190 racnode1.soft1.com racnode1
10.172.20.191 racnode2.soft1.com racnode2
10.172.20.192 racnode3.soft1.com racnode3
10.172.20.193 racnode4.soft1.com racnode4
##=======================================
# VIPs
##=======================================
10.172.20.201 racnode1-vip.soft1.com ; racnode1-vip
10.172.20.202 racnode2-vip.soft1.com ; racnode2-vip
10.172.20.203 racnode3-vip.soft1.com ; racnode3-vip
10.172.20.204 racnode4-vip.soft1.com ; racnode4-vip
##=======================================
# Private Network for Cluster Interconnect
##=======================================
10.10.10.30 racnode1-priv.soft1.com racnode1-priv
10.10.10.31 racnode2-priv.soft1.com racnode2-priv
10.10.10.32 racnode3-priv.soft1.com racnode3-priv
10.10.10.34 racnode4-priv.soft1.com racnode4-priv
[oracle@racnode4 ~]$

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