Get-ZabbixAgentProxy.ps1

# Defining variables
$ZabbixProxies=
$InstallDir=

# getting IP address
[string]$IPAddress = [array]((Get-WmiObject -Class win32_networkadapterconfiguration | Where-Object {$_.defaultIPGateway -ne $null}).IPAddress)[0]

# defining networks and proxies
$ip_ranges= @(
    ("net1",        "start_ip1",           "end_ip1",         "proxy1"),
    ("net2",        "start_ip2",           "end_ip2",         "proxy2"),
    ("net3",        "start_ip3",           "end_ip3",         "proxy3")
)

# defining Active Proxy
ForEach ($range in $ip_ranges) {
    if (([version]$IPAddress -ge [version]$range[1]) -AND ([version]$IPAddress -le [version]$range[2])) {
        $ZabbixActiveProxy = $range[3]
        $Changed = True
    }
}

# changing conf
if ($Changed){
    Write-Output "Server=$ZabbixProxies`nServerActive=$ZabbixActiveProxy | Out-File $InstallDir\zabbix_agentd.conf.d\server.conf" -Force -Encoding ASCII
    Restart-Service "Zabbix Agent"
}