CC [M]  net/ipsec/ipsec_init.o
  CC [M]  net/ipsec/ipsec_sa.o
  CC [M]  net/ipsec/ipsec_radij.o
  CC [M]  net/ipsec/radij.o
  CC [M]  net/ipsec/ipsec_life.o
  CC [M]  net/ipsec/ipsec_proc.o
  CC [M]  net/ipsec/ipsec_tunnel.o
  CC [M]  net/ipsec/ipsec_xmit.o
net/ipsec/ipsec_xmit.c: In function ‘ipsec_xmit_encap_bundle’:
net/ipsec/ipsec_xmit.c:1343: error: ‘ixt_e’ undeclared (first use in this function)
net/ipsec/ipsec_xmit.c:1343: error: (Each undeclared identifier is reported only once
net/ipsec/ipsec_xmit.c:1343: error: for each function it appears in.)
net/ipsec/ipsec_xmit.c:1345: error: ‘blocksize’ undeclared (first use in this function)
net/ipsec/ipsec_xmit.c:1354: error: ‘ixt_a’ undeclared (first use in this function)
make[3]: *** [net/ipsec/ipsec_xmit.o] Error 1
make[2]: *** [net/ipsec] Error 2
make[1]: *** [net] Error 2
make[1]: Leaving directory `/usr/src/linux-source-2.6.22'
make: *** [debian/stamp-build-kernel] Error 2
ruben@ubuntu-test02:/usr/src/linux$