libtool: compile:  /usr/bin/cc -I. -I/usr/local/include -DNDEBUG -I/usr/local/include -I/usr/local/include -I/usr/local/include -DSRCDIR=. -g2 -O2 -mlong-double-64 -fno-common -maltivec -fPIC -pthread -D_THREAD_SAFE -pthread -c services/listen_dnsport.c  -fno-common -DPIC -o .libs/listen_dnsport.o
services/listen_dnsport.c: In function ‘set_ip_dscp’:
services/listen_dnsport.c:825: error: ‘IPV6_TCLASS’ undeclared (first use in this function)
services/listen_dnsport.c:825: error: (Each undeclared identifier is reported only once
services/listen_dnsport.c:825: error: for each function it appears in.)
gmake: *** [listen_dnsport.lo] Error 1