^start of line
Descriptionthe literal text Description (case sensitive) \h*any horizontal whitespace character, repeated any number of times
:the literal : (5810 / 728 / 3A16)
\h*any horizontal whitespace character, repeated any number of times
vusb0/iDRACthe literal text vusb0/iDRAC (case sensitive) \h*any horizontal whitespace character, repeated any number of times
Network/the literal text Network/ (case sensitive) .+any character (except for line terminators), repeated at least once
Non-Capturing Group(?:\R(?!Description|IPv4 Address).*)* *repeats the group contents below any number of times:
\Ra newline sequence
Negative Lookahead(?!Description|IPv4 Address) 1st AlternativeDescription Descriptionthe literal text Description (case sensitive) 2nd AlternativeIPv4 Address IPv4 Addressthe literal text IPv4 Address (case sensitive) .*any character (except for line terminators), repeated any number of times
\Ra newline sequence
IPv4 Addressthe literal text IPv4 Address (case sensitive) \h+any horizontal whitespace character, repeated at least once
:the literal : (5810 / 728 / 3A16)
\h*any horizontal whitespace character, repeated any number of times
Group 1(\d{1,3}(?:\.\d{1,3}){3}) \d{1,3}a digit, repeated between 1 and 3 times
Non-Capturing Group(?:\.\d{1,3}){3} {3}repeats the group contents below exactly 3 times:
\.the literal . (4610 / 568 / 2E16)
\d{1,3}a digit, repeated between 1 and 3 times
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string