Match Multiple Patterns in a String and Return Matches as Hash - ruby

Question

I'm working with some log files, trying to extract pieces of data.
Here's an example of a file which, for the purposes of testing, I'm loading into a variable named sample. NOTE: The column layout of the log files is not guaranteed to be consistent from one file to the next.
sample = "test script result
Load for five secs: 70%/50%; one minute: 53%; five minutes: 49%
Time source is NTP, 23:25:12.829 UTC Wed Jun 11 2014
D
MAC Address IP Address MAC RxPwr Timing I
State (dBmv) Offset P
0000.955c.5a50 192.168.0.1 online(pt) 0.00 5522 N
338c.4f90.2794 10.10.0.1 online(pt) 0.00 3661 N
990a.cb24.71dc 127.0.0.1 online(pt) -0.50 4645 N
778c.4fc8.7307 192.168.1.1 online(pt) 0.00 3960 N
"
Right now, I'm just looking for IPv4 and MAC address; eventually the search will need to include more patterns. To accomplish this, I'm using two regular expressions and passing them to Regexp.union
patterns = Regexp.union(/(?<mac_address>\h{4}\.\h{4}\.\h{4})/, /(?<ip_address>\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})/)
As you can see, I'm using named groups to identify the matches.
The result I'm trying to achieve is a Hash. The key should equal the capture group name, and the value should equal what was matched by the regular expression.
Example:
{"mac_address"=>"0000.955c.5a50", "ip_address"=>"192.168.0.1"}
{"mac_address"=>"338c.4f90.2794", "ip_address"=>"10.10.0.1"}
{"mac_address"=>"990a.cb24.71dc", "ip_address"=>"127.0.0.1"}
{"mac_address"=>"778c.4fc8.7307", "ip_address"=>"192.168.1.1"}
Here's what I've come up with so far:
sample.split(/\r?\n/).each do |line|
hashes = []
line.split(/\s+/).each do |val|
match = val.match(patterns)
if match
hashes << Hash[match.names.zip(match.captures)].delete_if { |k,v| v.nil? }
end
end
results = hashes.reduce({}) { |r,h| h.each {|k,v| r[k] = v}; r }
puts results if results.length > 0
end
I feel like there should be a more "elegant" way to do this. My chief concern, though, is performance.