I am trying to compile with tcp_wrappers, but I get this error: gcc -O2 -march=i686 -pipe -Wall -I/root/syslog-ng/work/src/libol-0.3.3/src -D_GNU_SOURCE -o syslog-ng main.o sources.o center.o filters.o destinations.o log.o cfgfile.o cfg-grammar.o cfg-lex.o affile.o afsocket.o afunix.o afinet.o afinter.o afuser.o afstreams.o afprogram.o afremctrl.o nscache.o utils.o syslog-names.o -lfl /root/syslog-ng/work/src/libol-0.3.3/src/.libs/libol.a -lnsl afinet.o: In function `do_open_afinet_connection': afinet.o(.text+0x3c3): undefined reference to `request_init' afinet.o(.text+0x3cf): undefined reference to `sock_host' afinet.o(.text+0x3d8): undefined reference to `hosts_access' collect2: ld returned 1 exit status make[3]: *** [syslog-ng] Error 1 Shouldn't it have something like -lwrap on the line above? Also, I heard on the mailing list that there is a patch for 1.5.19? Is there a link to it? What's the proper patch command to apply it? Thanks