/usr/share/wireshark/dtds/pocsettings.dtd is in libwireshark-data 2.4.5-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 | <? wireshark:protocol
proto_name="poc-settings"
description="poc-settings XML doc (RFC 4354)"
hierarchy="yes" ?>
<!ELEMENT poc-settings (entity)* >
<!ATTLIST poc-settings xmlns CDATA #IMPLIED>
<!ELEMENT entity (isb-settings? | am-settings? | ipab-settings? | sss-settings?)* >
<!ATTLIST entity id CDATA #REQUIRED>
<!ELEMENT isb-settings (incoming-session-barring)>
<!ELEMENT incoming-session-barring (#PCDATA)>
<!ATTLIST incoming-session-barring active CDATA #REQUIRED>
<!ELEMENT am-settings (answer-mode)>
<!ELEMENT answer-mode (#PCDATA)>
<!ELEMENT ipab-settings (incoming-personal-alert-barring)>
<!ELEMENT incoming-personal-alert-barring (#PCDATA)>
<!ATTLIST incoming-personal-alert-barring active CDATA #REQUIRED>
<!ELEMENT sss-settings (simultaneous-sessions-support)>
<!ELEMENT simultaneous-sessions-support (#PCDATA)>
<!ATTLIST simultaneous-sessions-support active CDATA #REQUIRED>
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