administrator@nas:~/src/l2tpns-2.1.21$ make
gcc -Wall -Wformat-security -Wno-format-zero-length  -g -O3 -I.  -DLIBDIR='"/usr/lib/l2tpns"' -DETCDIR='"/etc/l2tpns"' -DSTATISTICS -DSTAT_CALLS -DRINGBUFFER -DHAVE_EPOLL -DBGP -c -o arp.o arp.c
gcc -Wall -Wformat-security -Wno-format-zero-length  -g -O3 -I.  -DLIBDIR='"/usr/lib/l2tpns"' -DETCDIR='"/etc/l2tpns"' -DSTATISTICS -DSTAT_CALLS -DRINGBUFFER -DHAVE_EPOLL -DBGP -c -o cli.o cli.c
gcc -Wall -Wformat-security -Wno-format-zero-length  -g -O3 -I.  -DLIBDIR='"/usr/lib/l2tpns"' -DETCDIR='"/etc/l2tpns"' -DSTATISTICS -DSTAT_CALLS -DRINGBUFFER -DHAVE_EPOLL -DBGP -c -o cluster.o cluster.c
gcc -Wall -Wformat-security -Wno-format-zero-length  -g -O3 -I.  -DLIBDIR='"/usr/lib/l2tpns"' -DETCDIR='"/etc/l2tpns"' -DSTATISTICS -DSTAT_CALLS -DRINGBUFFER -DHAVE_EPOLL -DBGP -c -o constants.o constants.c
gcc -Wall -Wformat-security -Wno-format-zero-length  -g -O3 -I.  -DLIBDIR='"/usr/lib/l2tpns"' -DETCDIR='"/etc/l2tpns"' -DSTATISTICS -DSTAT_CALLS -DRINGBUFFER -DHAVE_EPOLL -DBGP -c -o control.o control.c
gcc -Wall -Wformat-security -Wno-format-zero-length  -g -O3 -I.  -DLIBDIR='"/usr/lib/l2tpns"' -DETCDIR='"/etc/l2tpns"' -DSTATISTICS -DSTAT_CALLS -DRINGBUFFER -DHAVE_EPOLL -DBGP -c -o icmp.o icmp.c
In file included from icmp.c:9:
/usr/include/linux/ip.h:93:2: error: #error "Endian problem - this didn't happen"
icmp.c: In function ‘host_unreachable’:
icmp.c:64: error: ‘struct iphdr’ has no member named ‘version’
icmp.c:65: error: ‘struct iphdr’ has no member named ‘ihl’
make: *** [icmp.o] Error 1