well the regex is supposed to get, as you figured, a number value which represent a specific interface and a digit or a string as the second value depends on what that series of digits represent in the beginning. hv's suggestion still does not help I applied it to previous regexes to following the same reasoning and it still crashed . Debugging in gdb shows it crashes in regexec.c (using bt) I am starting to wonder if this is caused by something else entirely but you all seem to agree it has to do with the regex ( If you have suggestion that will completely prove thats the case it would helpful). I am trying to apply the suggested patch I do not want to use the development version and changing the regexec.c file to look like the patched version of regexec.c that i did gives lots of errors. Removing those errors will be a pain if even possible with my limited experience.

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