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(?m)^router ospf$
(?m)^hostname R[0-9]+$

Result: Condition successful

This verifies that the device follows the R<number> hostname convention and has OSPF enabled. The two matches are independent, so their order does not matter.

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(?m)^router ospf$
(?m)^ network [0-9]+\.[0-9]+\.[0-9]+\.[0-9]+/([0-9]+) area [0-9]+$

Result: Condition successful

This verifies that an OSPF configuration section is followed by an OSPF network statement. Other OSPF configuration, such as a router-id, may appear between the matches.

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(?m)^interface Loopback[0-9]+$
(?m)^ description Management Loopback$
(?m)^ ip address 10\.255\.255\.[0-9]+ 255\.255\.255\.255$

Result: Condition successful

This verifies that a Loopback interface with a variable interface number has the required "Management Loopback" description and uses a /32 address from the 10.255.255.0/24 management subnet.

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