There seems to be more broken v6 APIs than just the OpenBSD one. Linux smells as well.

Makefile

@@ -20,17 +20,17 @@ LIBOWFAT_LIBRARY=$(PREFIX)/libowfat
 BINDIR?=$(PREFIX)/bin
 
 #FEATURES+=-DWANT_V6
-#FEATURES+=-DWANT_BROKEN_OPENBSD_V6_API
 
 #FEATURES+=-DWANT_ACCESSLIST_BLACK
 #FEATURES+=-DWANT_ACCESSLIST_WHITE
 
 #FEATURES+=-DWANT_SYNC_LIVE
 #FEATURES+=-DWANT_SYNC_SCRAPE
-FEATURES+=-DWANT_IP_FROM_QUERY_STRING
+#FEATURES+=-DWANT_IP_FROM_QUERY_STRING
 #FEATURES+=-DWANT_COMPRESSION_GZIP 
 #FEATURES+=-DWANT_LOG_NETWORKS
 #FEATURES+=-DWANT_RESTRICT_STATS
+#FEATURES+=-DWANT_IP_FROM_PROXY
 FEATURES+=-DWANT_FULLSCRAPE
 
 #FEATURES+=-D_DEBUG_HTTPERROR