Github user pbchou commented on the pull request:
https://github.com/apache/trafficserver/pull/571#issuecomment-219125801
On the Linux man page, at least, the optind should be set to 0 instead of 1
if you are mixing GNU extensions vs traditional between different invocations.
If you set to 0, you force it to scan the opstring for GNU extensions, which
ensures proper operation.
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