I see you don't need anything between ff:ff:ff:ff:ff:ff and xid, so this works: 
my $line = "00:04:23:a5:ce:6d > ff:ff:ff:ff:ff:ff, ethertype IPv6 (0x8
+6dd), length 66: ::.61701 > ff02::1:2:.547: [udp sum ok] dhcp solicit
+ (xid=493907) (len12, hlim 255)";
my @match = $line =~ /^(\S+) > (\S+),.*IPv6.*\.547:\.*xid=(\d+)/;
print "@match\n";

[download]
Update: You want to match IPv6 and .547, haven't read that.

Igor S. Lopes - izut
surrender to perl. your code, your rules.

In reply to Re: Help on regular expressions by izut
in thread Help on regular expressions by admiralfreezbee

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