User:IP:Session
waswas-fng:10.128.172.10:000001
waswas-fng:10.128.172.10:000002
waswas-fng:10.128.172.10:000003
waswas-fng:10.128.172.10:000004
waswas-fng:10.128.172.10:000005
waswas-fng:10.128.172.12:000005
waswas-fng:192.168.66.11:000004

Would be "OK"
Where:
User:IP:Session
waswas-fng:12.128.172.10:000001
waswas-fng:231.128.172.1:000002
waswas-fng:12.128.172.10:000003
waswas-fng:231.128.172.1:000004
waswas-fng:192.168.52.1:000005