Review the router configuration to determine if it will block all packets with IP options. [edit firewall family inet] filter <name> { term 1 { from { ip-options any; } then { log; syslog; discard; } } <additional accept terms> term default { then { log; syslog; discard; } } } [edit interfaces] <interface name> { unit <number> { family inet { filter input <filter name>; address <IPv4 address>/<mask>; } } } Note: Some Juniper devices support both monolithic filters and filter lists. Filter lists separate each term, or set of terms, into a separate filter that is applied sequentially to an interface. If using filter lists, the keywords "input" or "output" change to "input-list" or "output-list". Verify the final list item is a deny-all filter. The deny-all filter is created once per family and can be reused across multiple lists. For example: input-list [ permit_mgt permit_routing_protocols default-deny ]; If the router is not configured to drop all packets with IP options, this is a finding.