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The DNS delegate parser tries to filter duplicate DNS= entries, but the duplicate branch returned from the whole parser. This made a duplicate server truncate the rest of the same DNS= line, silently dropping later valid servers. Reproducer: DNS=192.168.77.78 192.168.77.78 192.168.77.79 Before: only 192.168.77.78 appeared in the delegate server list. Follow-up for:7928c0e0a1(cherry picked from commit0cfa2d4f4c)