=> Bootstrap dependency digest>=20010302: found digest-20111104
=> Bootstrap dependency fetch-[0-9]*: found fetch-1.7
===> Building for py31-libpcap-0.6.2nb1
(cd /tmp/pkgsrc/net/py-libpcap/work/pylibpcap-0.6.2 && /usr/pkg/bin/python3.1 mk-constants.py)
Traceback (most recent call last):
  File "mk-constants.py", line 136, in <module>
    fp.write(string.replace(rcs, '$', ''))
AttributeError: 'module' object has no attribute 'replace'
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/net/py-libpcap
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/net/py-libpcap