One can no longer add multiple Public IP ranges, which share the same subnet.

[PaulAngus]

ISSUE TYPE

• Bug Report

COMPONENT NAME

Networking

CLOUDSTACK VERSION

4.11.2

CONFIGURATION

Advanced networking

OS / ENVIRONMENT

N/A

SUMMARY

One can no longer add multiple Public IP ranges, which share the same subnet.
Previously one could take a subnet, and split it into multiple ranges and dedicate them to different accounts.
Now each range must be on a unique subnet.

STEPS TO REPRODUCE

```create vlaniprange zoneId="4549cc45-bc59-421c-bda7-ce097c70de79" vlan=untagged gateway=10.99.0.254 netmask=255.255.255.0 startip=10.99.0.1 endip=10.99.0.100 forsystemvms=false forVirtualNetwork=true
create vlaniprange zoneId="4549cc45-bc59-421c-bda7-ce097c70de79" vlan=untagged gateway=10.99.0.254 netmask=255.255.255.0 startip=10.99.0.101 endip=10.99.0.200 forsystemvms=false forVirtualNetwork=true```

EXPECTED RESULTS

2nd range added without issue

ACTUAL RESULTS

Error message returned:

Error: (HTTP 431, error code 4350) The IP range with tag: vlan://untagged in zone ref-trl-868-k-M7-pangus has overlapped with the subnet. Please specify a different gateway/netmask.

[rohityadavcloud]

cc @anuragaw can you take this one?

[anuragaw]

Sure @rhtyd . Looking at it starting today.

[anuragaw]

Traced back the bug introduction to 41fdb88#diff-6e2b61984e8fa2823bb47da3caafa4eeR3174