Hi Andrew, The 2.6.25-rc8-mm1 kernel build fails on x86_64, when compiled with randconfig option In file included from include/net/dst.h:15, from include/net/sock.h:57, from include/linux/if_pppox.h:145, from fs/compat_ioctl.c:39: include/net/neighbour.h: In function ‘neigh_parms_net’: include/net/neighbour.h:227: error: ‘init_net’ undeclared (first use in this function) include/net/neighbour.h:227: error: (Each undeclared identifier is reported only once include/net/neighbour.h:227: error: for each function it appears in.) include/net/neighbour.h: In function ‘pneigh_net’: include/net/neighbour.h:248: error: ‘init_net’ undeclared (first use in this function) include/net/neighbour.h: At top level: include/net/neighbour.h:258: error: field ‘p’ has incomplete type In file included from include/linux/if_pppox.h:145, from fs/compat_ioctl.c:39: include/net/sock.h: In function ‘sock_net’: include/net/sock.h:1331: error: ‘init_net’ undeclared (first use in this function) make[1]: *** [fs/compat_ioctl.o] Error 1 make: *** [fs] Error 2 -- Thanks & Regards, Kamalesh Babulal, Linux Technology Center, IBM, ISTL.