How to grep matching IP address from a log file?

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#!/usr/bin/perl
...
}

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192.168.1.2
192.168.1.3
192.168.1.4

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2017-12-08 07:01:39 <my source IP> GET /course-detail.aspx id=66&catCo
+lor=0 443 - 192.168.1.0 (e.g., IP) <server version etc. strings> 200 
+0 0 530

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Sample output that I want to achieve: 

...
2017-12-08 07:01:39 <my source IP> GET /course-detail.aspx id=66&catCo
+lor=0 443 - 192.168.1.3 (e.g., IP) <server version etc. strings> 200 
+0 0 530

#Note that I only want to grep IP addresses (192.168.1.1-3) that are i
+n the same netmask specified in $matcher

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