Maybe you can write the re with something like that:
see Regexp::Common::net

/(server[1-4])      # $1
 \s+
 (proc [A-Z]+)      # $2
 \s+
 (proc [.] \d+)     # $3
 \s+ \d+ \s+
 ( $RE{net}{IPv4} ) # $4
 \s+ .+ 
\z/xms;
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hth,
PooLpi