If (\d+\.\d+\.\d+\.\d+\:\d+) matches one ip-address, then (\d+\.\d+\.\d+\.\d+\:\d+)(\d+\.\d+\.\d+\.\d+\:\d+) will match two(*). The only thing you have to consider that there are some other characters in between. You may get them with .*?. So your final code could be: 

   if (m/(\d+\.\d+\.\d+\.\d+\:\d+).*?(\d+\.\d+\.\d+\.\d+\:\d+)/){
      push @ipaddress,$2;

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HTH, Rata

update: (*) well, not exactly, as there is a seperator missing between both (and the regex-engine cannot determine where ip1 ends and where ip2 starts) ... but that is taken care off in the next step...

In reply to Re: Regexp question,get 2nd match by Ratazong
in thread Regexp question,get 2nd match by cztmonk

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