pfSense

Aliases are shown incorrectly in rules as 'single/0'. This then throws errors loading the ruleset:

Unresolvable source alias 'single/0' for rule 'Test rule' @ 2023-10-13 14:49:54

That is this alias:

        <alias>
            <name>Test1</name>
            <type>host</type>
            <address>172.21.24.8</address>
            <descr><![CDATA[Test alias]]></descr>
            <detail><![CDATA[Entry added Fri, 13 Oct 2023 14:45:57 +0100]]></detail>
        </alias>

In this rule:

        <rule>
            <id></id>
            <tracker>1697204983</tracker>
            <type>block</type>
            <interface>wan</interface>
            <ipprotocol>inet</ipprotocol>
            <tag></tag>
            <tagged></tagged>
            <max></max>
            <max-src-nodes></max-src-nodes>
            <max-src-conn></max-src-conn>
            <max-src-states></max-src-states>
            <statetimeout></statetimeout>
            <statetype><![CDATA[keep state]]></statetype>
            <os></os>
            <protocol>tcp</protocol>
            <srcmac></srcmac>
            <dstmac></dstmac>
            <source>
                <address>single/0</address>
            </source>
            <destination>
                <any></any>
            </destination>
            <descr><![CDATA[Test rule]]></descr>
            <bridgeto></bridgeto>
            <updated>
                <time>1697204983</time>
                <username><![CDATA[admin@172.21.16.8 (Local Database)]]></username>
            </updated>
            <created>
                <time>1697204983</time>
                <username><![CDATA[admin@172.21.16.8 (Local Database)]]></username>
            </created>
        </rule>

Generating this ruleset:

table <Test1> {   172.21.24.8 } 
Test1 = "<Test1>" 
...
# Unresolvable source alias 'single/0' for rule 'Test rule' label "USER_RULE: Test rule"